/* ***** BEGIN LICENSE BLOCK *****
 
* JTransforms
 
* Copyright (c) 2007 onward, Piotr Wendykier
 
* All rights reserved.
 
*
 
* Redistribution and use in source and binary forms, with or without
 
* modification, are permitted provided that the following conditions are met:
 
*
 
* 1. Redistributions of source code must retain the above copyright notice, this
 
*
    
list of conditions and the following disclaimer.
 
* 2. Redistributions in binary form must reproduce the above copyright notice,
 
*
    
this list of conditions and the following disclaimer in the documentation
 
*
    
and/or other materials provided with the distribution.
 
*
 
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 
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*
 
* ***** END LICENSE BLOCK ***** */
package org.jtransforms.utils;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.logging.Level;
import java.util.logging.Logger;
import static org.apache.commons.math3.util.FastMath.*;
import pl.edu.icm.jlargearrays.ConcurrencyUtils;
import pl.edu.icm.jlargearrays.DoubleLargeArray;
import pl.edu.icm.jlargearrays.FloatLargeArray;
import pl.edu.icm.jlargearrays.LongLargeArray;

/**
 
* Static utility methods.
 
*
  

 
* @author Piotr Wendykier (piotr.wendykier@gmail.com)
 
*/

public class CommonUtils
{

    
private static long THREADS_BEGIN_N_1D_FFT_2THREADS = 8192;

    
private static long THREADS_BEGIN_N_1D_FFT_4THREADS = 65536;

    
private static long THREADS_BEGIN_N_2D = 65536;

    
private static long THREADS_BEGIN_N_3D = 65536;

    
private static boolean useLargeArrays = false;

    
public CommonUtils()
    
{
    
}

    
/**
     
* Causes the currently executing thread to sleep (temporarily cease
     
* execution) for the specified number of milliseconds.
     
*
     
* @param millis the length of time to sleep in milliseconds
     
*/

    
public static void sleep(long millis)
    
{
        
try {
            
Thread.sleep(millis);
        
} catch (InterruptedException e) {
            
e.printStackTrace();
        
}
    
}

    
/**
     
* Returns the minimal size of 1D data for which two threads are used.
     
*
     
* @return the minimal size of 1D data for which two threads are used
     
*/

    
public static long getThreadsBeginN_1D_FFT_2Threads()
    
{
        
return THREADS_BEGIN_N_1D_FFT_2THREADS;
    
}

    
/**
     
* Returns the minimal size of 1D data for which four threads are used.
     
*
     
* @return the minimal size of 1D data for which four threads are used
     
*/

    
public static long getThreadsBeginN_1D_FFT_4Threads()
    
{
        
return THREADS_BEGIN_N_1D_FFT_4THREADS;
    
}

    
/**
     
* Returns the minimal size of 2D data for which threads are used.
     
*
     
* @return the minimal size of 2D data for which threads are used
     
*/

    
public static long getThreadsBeginN_2D()
    
{
        
return THREADS_BEGIN_N_2D;
    
}

    
/**
     
* Returns the minimal size of 3D data for which threads are used.
     
*
     
* @return the minimal size of 3D data for which threads are used
     
*/

    
public static long getThreadsBeginN_3D()
    
{
        
return THREADS_BEGIN_N_3D;
    
}

    
/**
     
* Sets the minimal size of 1D data for which two threads are used.
     
*
     
* @param n the minimal size of 1D data for which two threads are used
     
*/

    
public static void setThreadsBeginN_1D_FFT_2Threads(long n)
    
{
        
if (n < 1024) {
            
THREADS_BEGIN_N_1D_FFT_2THREADS = 1024;
        
} else {
            
THREADS_BEGIN_N_1D_FFT_2THREADS = n;
        
}
    
}

    
/**
     
* Sets the minimal size of 1D data for which four threads are used.
     
*
     
* @param n the minimal size of 1D data for which four threads are used
     
*/

    
public static void setThreadsBeginN_1D_FFT_4Threads(long n)
    
{
        
if (n < 1024) {
            
THREADS_BEGIN_N_1D_FFT_4THREADS = 1024;
        
} else {
            
THREADS_BEGIN_N_1D_FFT_4THREADS = n;
        
}
    
}

    
/**
     
* Sets the minimal size of 2D data for which threads are used.
     
*
     
* @param n the minimal size of 2D data for which threads are used
     
*/

    
public static void setThreadsBeginN_2D(long n)
    
{
        
if (n < 4096) {
            
THREADS_BEGIN_N_2D = 4096;
        
} else {
            
THREADS_BEGIN_N_2D = n;
        
}
    
}

    
/**
     
* Sets the minimal size of 3D data for which threads are used.
     
*
     
* @param n the minimal size of 3D data for which threads are used
     
*/

    
public static void setThreadsBeginN_3D(long n)
    
{
        
THREADS_BEGIN_N_3D = n;
    
}

    
/**
     
* Resets the minimal size of 1D data for which two and four threads are
     
* used.
     
*/

    
public static void resetThreadsBeginN_FFT()
    
{
        
THREADS_BEGIN_N_1D_FFT_2THREADS = 8192;
        
THREADS_BEGIN_N_1D_FFT_4THREADS = 65536;
    
}

    
/**
     
* Resets the minimal size of 2D and 3D data for which threads are used.
     
*/

    
public static void resetThreadsBeginN()
    
{
        
THREADS_BEGIN_N_2D = 65536;
        
THREADS_BEGIN_N_3D = 65536;
    
}

    
/**
     
* Returns the value of useLargeArrays variable.
     
*
  

     
* @return the value of useLargeArrays variable
     
*/

    
public static boolean isUseLargeArrays()
    
{
        
return useLargeArrays;
    
}

    
/**
     
* Sets the value of useLargeArrays variable.
     
*
  

     
* @param useLargeArrays the value of useLargeArrays variable
     
*/

    
public static void setUseLargeArrays(boolean useLargeArrays)
    
{
        
CommonUtils.useLargeArrays = useLargeArrays;
    
}

    
/**
     
* Returns the closest power-of-two number greater than or equal to x.
     
*
     
* @param x input value
     
*
     
* @return the closest power-of-two number greater than or equal to x
     
*/

    
public static int nextPow2(int x)
    
{
        
if (x < 1) {
            
throw new IllegalArgumentException("x must be greater or equal 1");
        
}
        
if ((x & (x - 1)) == 0) {
            
return x; // x is already a power-of-two number
 

        
}
        
x |= (x >>> 1);
        
x |= (x >>> 2);
        
x |= (x >>> 4);
        
x |= (x >>> 8);
        
x |= (x >>> 16);
        
return x + 1;
    
}

    
/**
     
* Returns the closest power-of-two number greater than or equal to x.
     
*
     
* @param x input value
     
*
     
* @return the closest power-of-two number greater than or equal to x
     
*/

    
public static long nextPow2(long x)
    
{
        
if (x < 1) {
            
throw new IllegalArgumentException("x must be greater or equal 1");
        
}
        
if ((x & (x - 1l)) == 0) {
            
return x; // x is already a power-of-two number
 

        
}
        
x |= (x >>> 1l);
        
x |= (x >>> 2l);
        
x |= (x >>> 4l);
        
x |= (x >>> 8l);
        
x |= (x >>> 16l);
        
x |= (x >>> 32l);
        
return x + 1l;
    
}

    
/**
     
* Returns the closest power-of-two number less than or equal to x.
     
*
     
* @param x input value
     
*
     
* @return the closest power-of-two number less then or equal to x
     
*/

    
public static int prevPow2(int x)
    
{
        
if (x < 1) {
            
throw new IllegalArgumentException("x must be greater or equal 1");
        
}
        
return (int) pow(2, floor(log(x) / log(2)));
    
}

    
/**
     
* Returns the closest power-of-two number less than or equal to x.
     
*
     
* @param x input value
     
*
     
* @return the closest power-of-two number less then or equal to x
     
*/

    
public static long prevPow2(long x)
    
{
        
if (x < 1) {
            
throw new IllegalArgumentException("x must be greater or equal 1");
        
}
        
return (long) pow(2, floor(log(x) / log(2)));
    
}

    
/**
     
* Checks if x is a power-of-two number.
     
*
     
* @param x input value
     
*
     
* @return true if x is a power-of-two number
     
*/

    
public static boolean isPowerOf2(int x)
    
{
        
if (x <= 0) {
            
return false;
        
} else {
            
return (x & (x - 1)) == 0;
        
}
    
}

    
/**
     
* Checks if x is a power-of-two number.
     
*
     
* @param x input value
     
*
     
* @return true if x is a power-of-two number
     
*/

    
public static boolean isPowerOf2(long x)
    
{
        
if (x <= 0) {
            
return false;
        
} else {
            
return (x & (x - 1l)) == 0;
        
}
    
}

    
public static long getReminder(long n, int factors[])
    
{
        
long reminder = n;

        
if (n <= 0) {
            
throw new IllegalArgumentException("n must be positive integer");
        
}

        
for (int i = 0; i < factors.length && reminder != 1l; i++) {
            
long factor = factors[i];
            
while ((reminder % factor) == 0) {
                
reminder /= factor;
            
}
        
}
        
return reminder;
    
}

    
public static void makeipt(int nw, int[] ip)
    
{
        
int j, l, m, m2, p, q;

        
ip[2] = 0;
        
ip[3] = 16;
        
m = 2;
        
for (l = nw; l > 32; l >>= 2) {
            
m2 = m << 1;
            
q = m2 << 3;
            
for (j = m; j < m2; j++) {
                
p = ip[j] << 2;
                
ip[m + j] = p;
                
ip[m2 + j] = p + q;
            
}
            
m = m2;
        
}
    
}

    
public static void makeipt(long nw, LongLargeArray ipl)
    
{
        
long j, l, m, m2, p, q;

        
ipl.setLong(2, 0);
        
ipl.setLong(3, 16);
        
m = 2;
        
for (l = nw; l > 32; l >>= 2l) {
            
m2 = m << 1l;
            
q = m2 << 3l;
            
for (j = m; j < m2; j++) {
                
p = ipl.getLong(j) << 2l;
                
ipl.setLong(m + j, p);
                
ipl.setLong(m2 + j, p + q);
            
}
            
m = m2;
        
}
    
}

    
public static void makewt(int nw, int[] ip, double[] w)
    
{
        
int j, nwh, nw0, nw1;
        
double delta, wn4r, wk1r, wk1i, wk3r, wk3i;
        
double delta2, deltaj, deltaj3;

        
ip[0] = nw;
        
ip[1] = 1;
        
if (nw > 2) {
            
nwh = nw >> 1;
            
delta = 0.785398163397448278999490867136046290 / nwh;
            
delta2 = delta * 2;
            
wn4r = cos(delta * nwh);
            
w[0] = 1;
            
w[1] = wn4r;
            
if (nwh == 4) {
                
w[2] = cos(delta2);
                
w[3] = sin(delta2);
            
} else if (nwh > 4) {
                
CommonUtils.makeipt(nw, ip);
                
w[2] = 0.5 / cos(delta2);
                
w[3] = 0.5 / cos(delta * 6);
                
for (j = 4; j < nwh; j += 4) {
                    
deltaj = delta * j;
                    
deltaj3 = 3 * deltaj;
                    
w[j] = cos(deltaj);
                    
w[j + 1] = sin(deltaj);
                    
w[j + 2] = cos(deltaj3);
                    
w[j + 3] = -sin(deltaj3);
                
}
            
}
            
nw0 = 0;
            
while (nwh > 2) {
                
nw1 = nw0 + nwh;
                
nwh >>= 1;
                
w[nw1] = 1;
                
w[nw1 + 1] = wn4r;
                
if (nwh == 4) {
                    
wk1r = w[nw0 + 4];
                    
wk1i = w[nw0 + 5];
                    
w[nw1 + 2] = wk1r;
                    
w[nw1 + 3] = wk1i;
                
} else if (nwh > 4) {
                    
wk1r = w[nw0 + 4];
                    
wk3r = w[nw0 + 6];
                    
w[nw1 + 2] = 0.5 / wk1r;
                    
w[nw1 + 3] = 0.5 / wk3r;
                    
for (j = 4; j < nwh; j += 4) {
                        
int idx1 = nw0 + 2 * j;
                        
int idx2 = nw1 + j;
                        
wk1r = w[idx1];
                        
wk1i = w[idx1 + 1];
                        
wk3r = w[idx1 + 2];
                        
wk3i = w[idx1 + 3];
                        
w[idx2] = wk1r;
                        
w[idx2 + 1] = wk1i;
                        
w[idx2 + 2] = wk3r;
                        
w[idx2 + 3] = wk3i;
                    
}
                
}
                
nw0 = nw1;
            
}
        
}
    
}

    
public static void makewt(long nw, LongLargeArray ipl, DoubleLargeArray wl)
    
{
        
long j, nwh, nw0, nw1;
        
double delta, wn4r, wk1r, wk1i, wk3r, wk3i;
        
double delta2, deltaj, deltaj3;

        
ipl.setLong(0, nw);
        
ipl.setLong(1, 1l);
        
if (nw > 2) {
            
nwh = nw >> 1;
            
delta = 0.785398163397448278999490867136046290 / nwh;
            
delta2 = delta * 2;
            
wn4r = cos(delta * nwh);
            
wl.setDouble(0, 1);
            
wl.setDouble(1, wn4r);
            
if (nwh == 4) {
                
wl.setDouble(2, cos(delta2));
                
wl.setDouble(3, sin(delta2));
            
} else if (nwh > 4) {
                
CommonUtils.makeipt(nw, ipl);
                
wl.setDouble(2, 0.5 / cos(delta2));
                
wl.setDouble(3, 0.5 / cos(delta * 6));
                
for (j = 4; j < nwh; j += 4) {
                    
deltaj = delta * j;
                    
deltaj3 = 3 * deltaj;
                    
wl.setDouble(j, cos(deltaj));
                    
wl.setDouble(j + 1, sin(deltaj));
                    
wl.setDouble(j + 2, cos(deltaj3));
                    
wl.setDouble(j + 3, -sin(deltaj3));
                
}
            
}
            
nw0 = 0;
            
while (nwh > 2) {
                
nw1 = nw0 + nwh;
                
nwh >>= 1l;
                
wl.setDouble(nw1, 1);
                
wl.setDouble(nw1 + 1, wn4r);
                
if (nwh == 4) {
                    
wk1r = wl.getDouble(nw0 + 4);
                    
wk1i = wl.getDouble(nw0 + 5);
                    
wl.setDouble(nw1 + 2, wk1r);
                    
wl.setDouble(nw1 + 3, wk1i);
                
} else if (nwh > 4) {
                    
wk1r = wl.getDouble(nw0 + 4);
                    
wk3r = wl.getDouble(nw0 + 6);
                    
wl.setDouble(nw1 + 2, 0.5 / wk1r);
                    
wl.setDouble(nw1 + 3, 0.5 / wk3r);
                    
for (j = 4; j < nwh; j += 4) {
                        
long idx1 = nw0 + 2 * j;
                        
long idx2 = nw1 + j;
                        
wk1r = wl.getDouble(idx1);
                        
wk1i = wl.getDouble(idx1 + 1);
                        
wk3r = wl.getDouble(idx1 + 2);
                        
wk3i = wl.getDouble(idx1 + 3);
                        
wl.setDouble(idx2, wk1r);
                        
wl.setDouble(idx2 + 1, wk1i);
                        
wl.setDouble(idx2 + 2, wk3r);
                        
wl.setDouble(idx2 + 3, wk3i);
                    
}
                
}
                
nw0 = nw1;
            
}
        
}
    
}

    
public static void makect(int nc, double[] c, int startc, int[] ip)
    
{
        
int j, nch;
        
double delta, deltaj;

        
ip[1] = nc;
        
if (nc > 1) {
            
nch = nc >> 1;
            
delta = 0.785398163397448278999490867136046290 / nch;
            
c[startc] = cos(delta * nch);
            
c[startc + nch] = 0.5 * c[startc];
            
for (j = 1; j < nch; j++) {
                
deltaj = delta * j;
                
c[startc + j] = 0.5 * cos(deltaj);
                
c[startc + nc - j] = 0.5 * sin(deltaj);
            
}
        
}
    
}

    
public static void makect(long nc, DoubleLargeArray c, long startc, LongLargeArray ipl)
    
{
        
long j, nch;
        
double delta, deltaj;

        
ipl.setLong(1, nc);
        
if (nc > 1) {
            
nch = nc >> 1l;
            
delta = 0.785398163397448278999490867136046290 / nch;
            
c.setDouble(startc, cos(delta * nch));
            
c.setDouble(startc + nch, 0.5 * c.getDouble(startc));
            
for (j = 1; j < nch; j++) {
                
deltaj = delta * j;
                
c.setDouble(startc + j, 0.5 * cos(deltaj));
                
c.setDouble(startc + nc - j, 0.5 * sin(deltaj));
            
}
        
}
    
}

    
public static void makect(int nc, float[] c, int startc, int[] ip)
    
{
        
int j, nch;
        
float delta, deltaj;

        
ip[1] = nc;
        
if (nc > 1) {
            
nch = nc >> 1;
            
delta = 0.785398163397448278999490867136046290f / nch;
            
c[startc] = (float) cos(delta * nch);
            
c[startc + nch] = 0.5f * c[startc];
            
for (j = 1; j < nch; j++) {
                
deltaj = delta * j;
                
c[startc + j] = 0.5f * (float) cos(deltaj);
                
c[startc + nc - j] = 0.5f * (float) sin(deltaj);
            
}
        
}
    
}

    
public static void makect(long nc, FloatLargeArray c, long startc, LongLargeArray ipl)
    
{
        
long j, nch;
        
float delta, deltaj;

        
ipl.setLong(1, nc);
        
if (nc > 1) {
            
nch = nc >> 1l;
            
delta = 0.785398163397448278999490867136046290f / nch;
            
c.setFloat(startc, (float) cos(delta * nch));
            
c.setFloat(startc + nch, 0.5f * c.getFloat(startc));
            
for (j = 1; j < nch; j++) {
                
deltaj = delta * j;
                
c.setFloat(startc + j, 0.5f * (float) cos(deltaj));
                
c.setFloat(startc + nc - j, 0.5f * (float) sin(deltaj));
            
}
        
}
    
}

    
public static void makewt(int nw, int[] ip, float[] w)
    
{
        
int j, nwh, nw0, nw1;
        
float delta, wn4r, wk1r, wk1i, wk3r, wk3i;
        
float delta2, deltaj, deltaj3;

        
ip[0] = nw;
        
ip[1] = 1;
        
if (nw > 2) {
            
nwh = nw >> 1;
            
delta = 0.785398163397448278999490867136046290f / nwh;
            
delta2 = delta * 2;
            
wn4r = (float) cos(delta * nwh);
            
w[0] = 1;
            
w[1] = wn4r;
            
if (nwh == 4) {
                
w[2] = (float) cos(delta2);
                
w[3] = (float) sin(delta2);
            
} else if (nwh > 4) {
                
CommonUtils.makeipt(nw, ip);
                
w[2] = 0.5f / (float) cos(delta2);
                
w[3] = 0.5f / (float) cos(delta * 6);
                
for (j = 4; j < nwh; j += 4) {
                    
deltaj = delta * j;
                    
deltaj3 = 3 * deltaj;
                    
w[j] = (float) cos(deltaj);
                    
w[j + 1] = (float) sin(deltaj);
                    
w[j + 2] = (float) cos(deltaj3);
                    
w[j + 3] = -(float) sin(deltaj3);
                
}
            
}
            
nw0 = 0;
            
while (nwh > 2) {
                
nw1 = nw0 + nwh;
                
nwh >>= 1;
                
w[nw1] = 1;
                
w[nw1 + 1] = wn4r;
                
if (nwh == 4) {
                    
wk1r = w[nw0 + 4];
                    
wk1i = w[nw0 + 5];
                    
w[nw1 + 2] = wk1r;
                    
w[nw1 + 3] = wk1i;
                
} else if (nwh > 4) {
                    
wk1r = w[nw0 + 4];
                    
wk3r = w[nw0 + 6];
                    
w[nw1 + 2] = 0.5f / wk1r;
                    
w[nw1 + 3] = 0.5f / wk3r;
                    
for (j = 4; j < nwh; j += 4) {
                        
int idx1 = nw0 + 2 * j;
                        
int idx2 = nw1 + j;
                        
wk1r = w[idx1];
                        
wk1i = w[idx1 + 1];
                        
wk3r = w[idx1 + 2];
                        
wk3i = w[idx1 + 3];
                        
w[idx2] = wk1r;
                        
w[idx2 + 1] = wk1i;
                        
w[idx2 + 2] = wk3r;
                        
w[idx2 + 3] = wk3i;
                    
}
                
}
                
nw0 = nw1;
            
}
        
}
    
}

    
public static void makewt(long nw, LongLargeArray ipl, FloatLargeArray wl)
    
{
        
long j, nwh, nw0, nw1;
        
float delta, wn4r, wk1r, wk1i, wk3r, wk3i;
        
float delta2, deltaj, deltaj3;

        
ipl.setLong(0, nw);
        
ipl.setLong(1, 1l);
        
if (nw > 2) {
            
nwh = nw >> 1;
            
delta = 0.785398163397448278999490867136046290f / nwh;
            
delta2 = delta * 2;
            
wn4r = (float) cos(delta * nwh);
            
wl.setFloat(0, 1);
            
wl.setFloat(1, wn4r);
            
if (nwh == 4) {
                
wl.setFloat(2, (float) cos(delta2));
                
wl.setFloat(3, (float) sin(delta2));
            
} else if (nwh > 4) {
                
CommonUtils.makeipt(nw, ipl);
                
wl.setFloat(2, 0.5f / (float) cos(delta2));
                
wl.setFloat(3, 0.5f / (float) cos(delta * 6));
                
for (j = 4; j < nwh; j += 4) {
                    
deltaj = delta * j;
                    
deltaj3 = 3 * deltaj;
                    
wl.setFloat(j, (float) cos(deltaj));
                    
wl.setFloat(j + 1, (float) sin(deltaj));
                    
wl.setFloat(j + 2, (float) cos(deltaj3));
                    
wl.setFloat(j + 3, -(float) sin(deltaj3));
                
}
            
}
            
nw0 = 0;
            
while (nwh > 2) {
                
nw1 = nw0 + nwh;
                
nwh >>= 1l;
                
wl.setFloat(nw1, 1);
                
wl.setFloat(nw1 + 1, wn4r);
                
if (nwh == 4) {
                    
wk1r = wl.getFloat(nw0 + 4);
                    
wk1i = wl.getFloat(nw0 + 5);
                    
wl.setFloat(nw1 + 2, wk1r);
                    
wl.setFloat(nw1 + 3, wk1i);
                
} else if (nwh > 4) {
                    
wk1r = wl.getFloat(nw0 + 4);
                    
wk3r = wl.getFloat(nw0 + 6);
                    
wl.setFloat(nw1 + 2, 0.5f / wk1r);
                    
wl.setFloat(nw1 + 3, 0.5f / wk3r);
                    
for (j = 4; j < nwh; j += 4) {
                        
long idx1 = nw0 + 2 * j;
                        
long idx2 = nw1 + j;
                        
wk1r = wl.getFloat(idx1);
                        
wk1i = wl.getFloat(idx1 + 1);
                        
wk3r = wl.getFloat(idx1 + 2);
                        
wk3i = wl.getFloat(idx1 + 3);
                        
wl.setFloat(idx2, wk1r);
                        
wl.setFloat(idx2 + 1, wk1i);
                        
wl.setFloat(idx2 + 2, wk3r);
                        
wl.setFloat(idx2 + 3, wk3i);
                    
}
                
}
                
nw0 = nw1;
            
}
        
}
    
}

    
public static void cftfsub(int n, double[] a, int offa, int[] ip, int nw, double[] w)
    
{
        
if (n > 8) {
            
if (n > 32) {
                
cftf1st(n, a, offa, w, nw - (n >> 2));
                
if ((ConcurrencyUtils.getNumberOfThreads() > 1) && (n >= CommonUtils.getThreadsBeginN_1D_FFT_2Threads())) {
                    
cftrec4_th(n, a, offa, nw, w);
                
} else if (n > 512) {
                    
cftrec4(n, a, offa, nw, w);
                
} else if (n > 128) {
                    
cftleaf(n, 1, a, offa, nw, w);
                
} else {
                    
cftfx41(n, a, offa, nw, w);
                
}
                
bitrv2(n, ip, a, offa);
            
} else if (n == 32) {
                
cftf161(a, offa, w, nw - 8);
                
bitrv216(a, offa);
            
} else {
                
cftf081(a, offa, w, 0);
                
bitrv208(a, offa);
            
}
        
} else if (n == 8) {
            
cftf040(a, offa);
        
} else if (n == 4) {
            
cftxb020(a, offa);
        
}
    
}

    
public static void cftfsub(long n, DoubleLargeArray a, long offa, LongLargeArray ip, long nw, DoubleLargeArray w)
    
{
        
if (n > 8) {
            
if (n > 32) {
                
cftf1st(n, a, offa, w, nw - (n >> 2l));
                
if ((ConcurrencyUtils.getNumberOfThreads() > 1) && (n >= CommonUtils.getThreadsBeginN_1D_FFT_2Threads())) {
                    
cftrec4_th(n, a, offa, nw, w);
                
} else if (n > 512) {
                    
cftrec4(n, a, offa, nw, w);
                
} else if (n > 128) {
                    
cftleaf(n, 1, a, offa, nw, w);
                
} else {
                    
cftfx41(n, a, offa, nw, w);
                
}
                
bitrv2l(n, ip, a, offa);
            
} else if (n == 32) {
                
cftf161(a, offa, w, nw - 8);
                
bitrv216(a, offa);
            
} else {
                
cftf081(a, offa, w, 0);
                
bitrv208(a, offa);
            
}
        
} else if (n == 8) {
            
cftf040(a, offa);
        
} else if (n == 4) {
            
cftxb020(a, offa);
        
}
    
}

    
public static void cftbsub(int n, double[] a, int offa, int[] ip, int nw, double[] w)
    
{
        
if (n > 8) {
            
if (n > 32) {
                
cftb1st(n, a, offa, w, nw - (n >> 2));
                
if ((ConcurrencyUtils.getNumberOfThreads() > 1) && (n >= CommonUtils.getThreadsBeginN_1D_FFT_2Threads())) {
                    
cftrec4_th(n, a, offa, nw, w);
                
} else if (n > 512) {
                    
cftrec4(n, a, offa, nw, w);
                
} else if (n > 128) {
                    
cftleaf(n, 1, a, offa, nw, w);
                
} else {
                    
cftfx41(n, a, offa, nw, w);
                
}
                
bitrv2conj(n, ip, a, offa);
            
} else if (n == 32) {
                
cftf161(a, offa, w, nw - 8);
                
bitrv216neg(a, offa);
            
} else {
                
cftf081(a, offa, w, 0);
                
bitrv208neg(a, offa);
            
}
        
} else if (n == 8) {
            
cftb040(a, offa);
        
} else if (n == 4) {
            
cftxb020(a, offa);
        
}
    
}

    
public static void cftbsub(long n, DoubleLargeArray a, long offa, LongLargeArray ip, long nw, DoubleLargeArray w)
    
{
        
if (n > 8) {
            
if (n > 32) {
                
cftb1st(n, a, offa, w, nw - (n >> 2l));
                
if ((ConcurrencyUtils.getNumberOfThreads() > 1) && (n >= CommonUtils.getThreadsBeginN_1D_FFT_2Threads())) {
                    
cftrec4_th(n, a, offa, nw, w);
                
} else if (n > 512) {
                    
cftrec4(n, a, offa, nw, w);
                
} else if (n > 128) {
                    
cftleaf(n, 1, a, offa, nw, w);
                
} else {
                    
cftfx41(n, a, offa, nw, w);
                
}
                
bitrv2conj(n, ip, a, offa);
            
} else if (n == 32) {
                
cftf161(a, offa, w, nw - 8);
                
bitrv216neg(a, offa);
            
} else {
                
cftf081(a, offa, w, 0);
                
bitrv208neg(a, offa);
            
}
        
} else if (n == 8) {
            
cftb040(a, offa);
        
} else if (n == 4) {
            
cftxb020(a, offa);
        
}
    
}

    
public static void bitrv2(int n, int[] ip, double[] a, int offa)
    
{
        
int j1, k1, l, m, nh, nm;
        
double xr, xi, yr, yi;
        
int idx0, idx1, idx2;

        
m = 1;
        
for (l = n >> 2; l > 8; l >>= 2) {
            
m <<= 1;
        
}
        
nh = n >> 1;
        
nm = 4 * m;
        
if (l == 8) {
            
for (int k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (int j = 0; j < k; j++) {
                    
j1 = 4 * j + 2 * ip[m + k];
                    
k1 = idx0 + 2 * ip[m + j];
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                
}
                
k1 = idx0 + 2 * ip[m + k];
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 += nm;
                
k1 += 2 * nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 += nm;
                
k1 -= nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 -= 2;
                
k1 -= nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 += nh + 2;
                
k1 += nh + 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 -= nh - nm;
                
k1 += 2 * nm - 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
            
}
        
} else {
            
for (int k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (int j = 0; j < k; j++) {
                    
j1 = 4 * j + ip[m + k];
                    
k1 = idx0 + ip[m + j];
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                
}
                
k1 = idx0 + ip[m + k];
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 += nm;
                
k1 += nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
            
}
        
}
    
}

    
public static void bitrv2l(long n, LongLargeArray ip, DoubleLargeArray a, long offa)
    
{
        
long j1, k1, l, m, nh, nm;
        
double xr, xi, yr, yi;
        
long idx0, idx1, idx2;

        
m = 1;
        
for (l = n >> 2l; l > 8; l >>= 2l) {
            
m <<= 1l;
        
}
        
nh = n >> 1l;
        
nm = 4 * m;
        
if (l == 8) {
            
for (long k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (long j = 0; j < k; j++) {
                    
j1 = 4 * j + 2 * ip.getLong(m + k);
                    
k1 = idx0 + 2 * ip.getLong(m + j);
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                
}
                
k1 = idx0 + 2 * ip.getLong(m + k);
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
j1 += nm;
                
k1 += 2 * nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
j1 += nm;
                
k1 -= nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
j1 -= 2;
                
k1 -= nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
j1 += nh + 2;
                
k1 += nh + 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
j1 -= nh - nm;
                
k1 += 2 * nm - 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
            
}
        
} else {
            
for (long k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (long j = 0; j < k; j++) {
                    
j1 = 4 * j + ip.getLong(m + k);
                    
k1 = idx0 + ip.getLong(m + j);
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                
}
                
k1 = idx0 + ip.getLong(m + k);
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
j1 += nm;
                
k1 += nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
            
}
        
}
    
}

    
public static void bitrv2conj(int n, int[] ip, double[] a, int offa)
    
{
        
int j1, k1, l, m, nh, nm;
        
double xr, xi, yr, yi;
        
int idx0, idx1, idx2;

        
m = 1;
        
for (l = n >> 2; l > 8; l >>= 2) {
            
m <<= 1;
        
}
        
nh = n >> 1;
        
nm = 4 * m;
        
if (l == 8) {
            
for (int k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (int j = 0; j < k; j++) {
                    
j1 = 4 * j + 2 * ip[m + k];
                    
k1 = idx0 + 2 * ip[m + j];
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                
}
                
k1 = idx0 + 2 * ip[m + k];
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
a[idx1 - 1] = -a[idx1 - 1];
                
xr = a[idx1];
                
xi = -a[idx1 + 1];
                
yr = a[idx2];
                
yi = -a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
a[idx2 + 3] = -a[idx2 + 3];
                
j1 += nm;
                
k1 += 2 * nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = -a[idx1 + 1];
                
yr = a[idx2];
                
yi = -a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 += nm;
                
k1 -= nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = -a[idx1 + 1];
                
yr = a[idx2];
                
yi = -a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 -= 2;
                
k1 -= nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = -a[idx1 + 1];
                
yr = a[idx2];
                
yi = -a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 += nh + 2;
                
k1 += nh + 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = -a[idx1 + 1];
                
yr = a[idx2];
                
yi = -a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 -= nh - nm;
                
k1 += 2 * nm - 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
a[idx1 - 1] = -a[idx1 - 1];
                
xr = a[idx1];
                
xi = -a[idx1 + 1];
                
yr = a[idx2];
                
yi = -a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
a[idx2 + 3] = -a[idx2 + 3];
            
}
        
} else {
            
for (int k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (int j = 0; j < k; j++) {
                    
j1 = 4 * j + ip[m + k];
                    
k1 = idx0 + ip[m + j];
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                
}
                
k1 = idx0 + ip[m + k];
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
a[idx1 - 1] = -a[idx1 - 1];
                
xr = a[idx1];
                
xi = -a[idx1 + 1];
                
yr = a[idx2];
                
yi = -a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
a[idx2 + 3] = -a[idx2 + 3];
                
j1 += nm;
                
k1 += nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
a[idx1 - 1] = -a[idx1 - 1];
                
xr = a[idx1];
                
xi = -a[idx1 + 1];
                
yr = a[idx2];
                
yi = -a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
a[idx2 + 3] = -a[idx2 + 3];
            
}
        
}
    
}

    
public static void bitrv2conj(long n, LongLargeArray ip, DoubleLargeArray a, long offa)
    
{
        
long j1, k1, l, m, nh, nm;
        
double xr, xi, yr, yi;
        
long idx0, idx1, idx2;

        
m = 1;
        
for (l = n >> 2l; l > 8; l >>= 2l) {
            
m <<= 1;
        
}
        
nh = n >> 1l;
        
nm = 4 * m;
        
if (l == 8) {
            
for (long k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (long j = 0; j < k; j++) {
                    
j1 = 4 * j + 2 * ip.getLong(m + k);
                    
k1 = idx0 + 2 * ip.getLong(m + j);
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                
}
                
k1 = idx0 + 2 * ip.getLong(m + k);
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
a.setDouble(idx1 - 1, -a.getDouble(idx1 - 1));
                
xr = a.getDouble(idx1);
                
xi = -a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = -a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
a.setDouble(idx2 + 3, -a.getDouble(idx2 + 3));
                
j1 += nm;
                
k1 += 2 * nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = -a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = -a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
j1 += nm;
                
k1 -= nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = -a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = -a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
j1 -= 2;
                
k1 -= nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = -a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = -a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
j1 += nh + 2;
                
k1 += nh + 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getDouble(idx1);
                
xi = -a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = -a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
j1 -= nh - nm;
                
k1 += 2 * nm - 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
a.setDouble(idx1 - 1, -a.getDouble(idx1 - 1));
                
xr = a.getDouble(idx1);
                
xi = -a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = -a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
a.setDouble(idx2 + 3, -a.getDouble(idx2 + 3));
            
}
        
} else {
            
for (int k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (int j = 0; j < k; j++) {
                    
j1 = 4 * j + ip.getLong(m + k);
                    
k1 = idx0 + ip.getLong(m + j);
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getDouble(idx1);
                    
xi = -a.getDouble(idx1 + 1);
                    
yr = a.getDouble(idx2);
                    
yi = -a.getDouble(idx2 + 1);
                    
a.setDouble(idx1, yr);
                    
a.setDouble(idx1 + 1, yi);
                    
a.setDouble(idx2, xr);
                    
a.setDouble(idx2 + 1, xi);
                
}
                
k1 = idx0 + ip.getLong(m + k);
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
a.setDouble(idx1 - 1, -a.getDouble(idx1 - 1));
                
xr = a.getDouble(idx1);
                
xi = -a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = -a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
a.setDouble(idx2 + 3, -a.getDouble(idx2 + 3));
                
j1 += nm;
                
k1 += nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
a.setDouble(idx1 - 1, -a.getDouble(idx1 - 1));
                
xr = a.getDouble(idx1);
                
xi = -a.getDouble(idx1 + 1);
                
yr = a.getDouble(idx2);
                
yi = -a.getDouble(idx2 + 1);
                
a.setDouble(idx1, yr);
                
a.setDouble(idx1 + 1, yi);
                
a.setDouble(idx2, xr);
                
a.setDouble(idx2 + 1, xi);
                
a.setDouble(idx2 + 3, -a.getDouble(idx2 + 3));
            
}
        
}
    
}

    
public static void bitrv216(double[] a, int offa)
    
{
        
double x1r, x1i, x2r, x2i, x3r, x3i, x4r, x4i, x5r, x5i, x7r, x7i, x8r, x8i, x10r, x10i, x11r, x11i, x12r, x12i, x13r, x13i, x14r, x14i;

        
x1r = a[offa + 2];
        
x1i = a[offa + 3];
        
x2r = a[offa + 4];
        
x2i = a[offa + 5];
        
x3r = a[offa + 6];
        
x3i = a[offa + 7];
        
x4r = a[offa + 8];
        
x4i = a[offa + 9];
        
x5r = a[offa + 10];
        
x5i = a[offa + 11];
        
x7r = a[offa + 14];
        
x7i = a[offa + 15];
        
x8r = a[offa + 16];
        
x8i = a[offa + 17];
        
x10r = a[offa + 20];
        
x10i = a[offa + 21];
        
x11r = a[offa + 22];
        
x11i = a[offa + 23];
        
x12r = a[offa + 24];
        
x12i = a[offa + 25];
        
x13r = a[offa + 26];
        
x13i = a[offa + 27];
        
x14r = a[offa + 28];
        
x14i = a[offa + 29];
        
a[offa + 2] = x8r;
        
a[offa + 3] = x8i;
        
a[offa + 4] = x4r;
        
a[offa + 5] = x4i;
        
a[offa + 6] = x12r;
        
a[offa + 7] = x12i;
        
a[offa + 8] = x2r;
        
a[offa + 9] = x2i;
        
a[offa + 10] = x10r;
        
a[offa + 11] = x10i;
        
a[offa + 14] = x14r;
        
a[offa + 15] = x14i;
        
a[offa + 16] = x1r;
        
a[offa + 17] = x1i;
        
a[offa + 20] = x5r;
        
a[offa + 21] = x5i;
        
a[offa + 22] = x13r;
        
a[offa + 23] = x13i;
        
a[offa + 24] = x3r;
        
a[offa + 25] = x3i;
        
a[offa + 26] = x11r;
        
a[offa + 27] = x11i;
        
a[offa + 28] = x7r;
        
a[offa + 29] = x7i;
    
}

    
public static void bitrv216(DoubleLargeArray a, long offa)
    
{
        
double x1r, x1i, x2r, x2i, x3r, x3i, x4r, x4i, x5r, x5i, x7r, x7i, x8r, x8i, x10r, x10i, x11r, x11i, x12r, x12i, x13r, x13i, x14r, x14i;

        
x1r = a.getDouble(offa + 2);
        
x1i = a.getDouble(offa + 3);
        
x2r = a.getDouble(offa + 4);
        
x2i = a.getDouble(offa + 5);
        
x3r = a.getDouble(offa + 6);
        
x3i = a.getDouble(offa + 7);
        
x4r = a.getDouble(offa + 8);
        
x4i = a.getDouble(offa + 9);
        
x5r = a.getDouble(offa + 10);
        
x5i = a.getDouble(offa + 11);
        
x7r = a.getDouble(offa + 14);
        
x7i = a.getDouble(offa + 15);
        
x8r = a.getDouble(offa + 16);
        
x8i = a.getDouble(offa + 17);
        
x10r = a.getDouble(offa + 20);
        
x10i = a.getDouble(offa + 21);
        
x11r = a.getDouble(offa + 22);
        
x11i = a.getDouble(offa + 23);
        
x12r = a.getDouble(offa + 24);
        
x12i = a.getDouble(offa + 25);
        
x13r = a.getDouble(offa + 26);
        
x13i = a.getDouble(offa + 27);
        
x14r = a.getDouble(offa + 28);
        
x14i = a.getDouble(offa + 29);
        
a.setDouble(offa + 2, x8r);
        
a.setDouble(offa + 3, x8i);
        
a.setDouble(offa + 4, x4r);
        
a.setDouble(offa + 5, x4i);
        
a.setDouble(offa + 6, x12r);
        
a.setDouble(offa + 7, x12i);
        
a.setDouble(offa + 8, x2r);
        
a.setDouble(offa + 9, x2i);
        
a.setDouble(offa + 10, x10r);
        
a.setDouble(offa + 11, x10i);
        
a.setDouble(offa + 14, x14r);
        
a.setDouble(offa + 15, x14i);
        
a.setDouble(offa + 16, x1r);
        
a.setDouble(offa + 17, x1i);
        
a.setDouble(offa + 20, x5r);
        
a.setDouble(offa + 21, x5i);
        
a.setDouble(offa + 22, x13r);
        
a.setDouble(offa + 23, x13i);
        
a.setDouble(offa + 24, x3r);
        
a.setDouble(offa + 25, x3i);
        
a.setDouble(offa + 26, x11r);
        
a.setDouble(offa + 27, x11i);
        
a.setDouble(offa + 28, x7r);
        
a.setDouble(offa + 29, x7i);
    
}

    
public static void bitrv216neg(double[] a, int offa)
    
{
        
double x1r, x1i, x2r, x2i, x3r, x3i, x4r, x4i, x5r, x5i, x6r, x6i, x7r, x7i, x8r, x8i, x9r, x9i, x10r, x10i, x11r, x11i, x12r, x12i, x13r, x13i, x14r, x14i, x15r, x15i;

        
x1r = a[offa + 2];
        
x1i = a[offa + 3];
        
x2r = a[offa + 4];
        
x2i = a[offa + 5];
        
x3r = a[offa + 6];
        
x3i = a[offa + 7];
        
x4r = a[offa + 8];
        
x4i = a[offa + 9];
        
x5r = a[offa + 10];
        
x5i = a[offa + 11];
        
x6r = a[offa + 12];
        
x6i = a[offa + 13];
        
x7r = a[offa + 14];
        
x7i = a[offa + 15];
        
x8r = a[offa + 16];
        
x8i = a[offa + 17];
        
x9r = a[offa + 18];
        
x9i = a[offa + 19];
        
x10r = a[offa + 20];
        
x10i = a[offa + 21];
        
x11r = a[offa + 22];
        
x11i = a[offa + 23];
        
x12r = a[offa + 24];
        
x12i = a[offa + 25];
        
x13r = a[offa + 26];
        
x13i = a[offa + 27];
        
x14r = a[offa + 28];
        
x14i = a[offa + 29];
        
x15r = a[offa + 30];
        
x15i = a[offa + 31];
        
a[offa + 2] = x15r;
        
a[offa + 3] = x15i;
        
a[offa + 4] = x7r;
        
a[offa + 5] = x7i;
        
a[offa + 6] = x11r;
        
a[offa + 7] = x11i;
        
a[offa + 8] = x3r;
        
a[offa + 9] = x3i;
        
a[offa + 10] = x13r;
        
a[offa + 11] = x13i;
        
a[offa + 12] = x5r;
        
a[offa + 13] = x5i;
        
a[offa + 14] = x9r;
        
a[offa + 15] = x9i;
        
a[offa + 16] = x1r;
        
a[offa + 17] = x1i;
        
a[offa + 18] = x14r;
        
a[offa + 19] = x14i;
        
a[offa + 20] = x6r;
        
a[offa + 21] = x6i;
        
a[offa + 22] = x10r;
        
a[offa + 23] = x10i;
        
a[offa + 24] = x2r;
        
a[offa + 25] = x2i;
        
a[offa + 26] = x12r;
        
a[offa + 27] = x12i;
        
a[offa + 28] = x4r;
        
a[offa + 29] = x4i;
        
a[offa + 30] = x8r;
        
a[offa + 31] = x8i;
    
}

    
public static void bitrv216neg(DoubleLargeArray a, long offa)
    
{
        
double x1r, x1i, x2r, x2i, x3r, x3i, x4r, x4i, x5r, x5i, x6r, x6i, x7r, x7i, x8r, x8i, x9r, x9i, x10r, x10i, x11r, x11i, x12r, x12i, x13r, x13i, x14r, x14i, x15r, x15i;

        
x1r = a.getDouble(offa + 2);
        
x1i = a.getDouble(offa + 3);
        
x2r = a.getDouble(offa + 4);
        
x2i = a.getDouble(offa + 5);
        
x3r = a.getDouble(offa + 6);
        
x3i = a.getDouble(offa + 7);
        
x4r = a.getDouble(offa + 8);
        
x4i = a.getDouble(offa + 9);
        
x5r = a.getDouble(offa + 10);
        
x5i = a.getDouble(offa + 11);
        
x6r = a.getDouble(offa + 12);
        
x6i = a.getDouble(offa + 13);
        
x7r = a.getDouble(offa + 14);
        
x7i = a.getDouble(offa + 15);
        
x8r = a.getDouble(offa + 16);
        
x8i = a.getDouble(offa + 17);
        
x9r = a.getDouble(offa + 18);
        
x9i = a.getDouble(offa + 19);
        
x10r = a.getDouble(offa + 20);
        
x10i = a.getDouble(offa + 21);
        
x11r = a.getDouble(offa + 22);
        
x11i = a.getDouble(offa + 23);
        
x12r = a.getDouble(offa + 24);
        
x12i = a.getDouble(offa + 25);
        
x13r = a.getDouble(offa + 26);
        
x13i = a.getDouble(offa + 27);
        
x14r = a.getDouble(offa + 28);
        
x14i = a.getDouble(offa + 29);
        
x15r = a.getDouble(offa + 30);
        
x15i = a.getDouble(offa + 31);
        
a.setDouble(offa + 2, x15r);
        
a.setDouble(offa + 3, x15i);
        
a.setDouble(offa + 4, x7r);
        
a.setDouble(offa + 5, x7i);
        
a.setDouble(offa + 6, x11r);
        
a.setDouble(offa + 7, x11i);
        
a.setDouble(offa + 8, x3r);
        
a.setDouble(offa + 9, x3i);
        
a.setDouble(offa + 10, x13r);
        
a.setDouble(offa + 11, x13i);
        
a.setDouble(offa + 12, x5r);
        
a.setDouble(offa + 13, x5i);
        
a.setDouble(offa + 14, x9r);
        
a.setDouble(offa + 15, x9i);
        
a.setDouble(offa + 16, x1r);
        
a.setDouble(offa + 17, x1i);
        
a.setDouble(offa + 18, x14r);
        
a.setDouble(offa + 19, x14i);
        
a.setDouble(offa + 20, x6r);
        
a.setDouble(offa + 21, x6i);
        
a.setDouble(offa + 22, x10r);
        
a.setDouble(offa + 23, x10i);
        
a.setDouble(offa + 24, x2r);
        
a.setDouble(offa + 25, x2i);
        
a.setDouble(offa + 26, x12r);
        
a.setDouble(offa + 27, x12i);
        
a.setDouble(offa + 28, x4r);
        
a.setDouble(offa + 29, x4i);
        
a.setDouble(offa + 30, x8r);
        
a.setDouble(offa + 31, x8i);
    
}

    
public static void bitrv208(double[] a, int offa)
    
{
        
double x1r, x1i, x3r, x3i, x4r, x4i, x6r, x6i;

        
x1r = a[offa + 2];
        
x1i = a[offa + 3];
        
x3r = a[offa + 6];
        
x3i = a[offa + 7];
        
x4r = a[offa + 8];
        
x4i = a[offa + 9];
        
x6r = a[offa + 12];
        
x6i = a[offa + 13];
        
a[offa + 2] = x4r;
        
a[offa + 3] = x4i;
        
a[offa + 6] = x6r;
        
a[offa + 7] = x6i;
        
a[offa + 8] = x1r;
        
a[offa + 9] = x1i;
        
a[offa + 12] = x3r;
        
a[offa + 13] = x3i;
    
}

    
public static void bitrv208(DoubleLargeArray a, long offa)
    
{
        
double x1r, x1i, x3r, x3i, x4r, x4i, x6r, x6i;

        
x1r = a.getDouble(offa + 2);
        
x1i = a.getDouble(offa + 3);
        
x3r = a.getDouble(offa + 6);
        
x3i = a.getDouble(offa + 7);
        
x4r = a.getDouble(offa + 8);
        
x4i = a.getDouble(offa + 9);
        
x6r = a.getDouble(offa + 12);
        
x6i = a.getDouble(offa + 13);
        
a.setDouble(offa + 2, x4r);
        
a.setDouble(offa + 3, x4i);
        
a.setDouble(offa + 6, x6r);
        
a.setDouble(offa + 7, x6i);
        
a.setDouble(offa + 8, x1r);
        
a.setDouble(offa + 9, x1i);
        
a.setDouble(offa + 12, x3r);
        
a.setDouble(offa + 13, x3i);
    
}

    
public static void bitrv208neg(double[] a, int offa)
    
{
        
double x1r, x1i, x2r, x2i, x3r, x3i, x4r, x4i, x5r, x5i, x6r, x6i, x7r, x7i;

        
x1r = a[offa + 2];
        
x1i = a[offa + 3];
        
x2r = a[offa + 4];
        
x2i = a[offa + 5];
        
x3r = a[offa + 6];
        
x3i = a[offa + 7];
        
x4r = a[offa + 8];
        
x4i = a[offa + 9];
        
x5r = a[offa + 10];
        
x5i = a[offa + 11];
        
x6r = a[offa + 12];
        
x6i = a[offa + 13];
        
x7r = a[offa + 14];
        
x7i = a[offa + 15];
        
a[offa + 2] = x7r;
        
a[offa + 3] = x7i;
        
a[offa + 4] = x3r;
        
a[offa + 5] = x3i;
        
a[offa + 6] = x5r;
        
a[offa + 7] = x5i;
        
a[offa + 8] = x1r;
        
a[offa + 9] = x1i;
        
a[offa + 10] = x6r;
        
a[offa + 11] = x6i;
        
a[offa + 12] = x2r;
        
a[offa + 13] = x2i;
        
a[offa + 14] = x4r;
        
a[offa + 15] = x4i;
    
}

    
public static void bitrv208neg(DoubleLargeArray a, long offa)
    
{
        
double x1r, x1i, x2r, x2i, x3r, x3i, x4r, x4i, x5r, x5i, x6r, x6i, x7r, x7i;

        
x1r = a.getDouble(offa + 2);
        
x1i = a.getDouble(offa + 3);
        
x2r = a.getDouble(offa + 4);
        
x2i = a.getDouble(offa + 5);
        
x3r = a.getDouble(offa + 6);
        
x3i = a.getDouble(offa + 7);
        
x4r = a.getDouble(offa + 8);
        
x4i = a.getDouble(offa + 9);
        
x5r = a.getDouble(offa + 10);
        
x5i = a.getDouble(offa + 11);
        
x6r = a.getDouble(offa + 12);
        
x6i = a.getDouble(offa + 13);
        
x7r = a.getDouble(offa + 14);
        
x7i = a.getDouble(offa + 15);
        
a.setDouble(offa + 2, x7r);
        
a.setDouble(offa + 3, x7i);
        
a.setDouble(offa + 4, x3r);
        
a.setDouble(offa + 5, x3i);
        
a.setDouble(offa + 6, x5r);
        
a.setDouble(offa + 7, x5i);
        
a.setDouble(offa + 8, x1r);
        
a.setDouble(offa + 9, x1i);
        
a.setDouble(offa + 10, x6r);
        
a.setDouble(offa + 11, x6i);
        
a.setDouble(offa + 12, x2r);
        
a.setDouble(offa + 13, x2i);
        
a.setDouble(offa + 14, x4r);
        
a.setDouble(offa + 15, x4i);
    
}

    
public static void cftf1st(int n, double[] a, int offa, double[] w, int startw)
    
{
        
int j0, j1, j2, j3, k, m, mh;
        
double wn4r, csc1, csc3, wk1r, wk1i, wk3r, wk3i, wd1r, wd1i, wd3r, wd3i;
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i;
        
int idx0, idx1, idx2, idx3, idx4, idx5;
        
mh = n >> 3;
        
m = 2 * mh;
        
j1 = m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a[offa] + a[idx2];
        
x0i = a[offa + 1] + a[idx2 + 1];
        
x1r = a[offa] - a[idx2];
        
x1i = a[offa + 1] - a[idx2 + 1];
        
x2r = a[idx1] + a[idx3];
        
x2i = a[idx1 + 1] + a[idx3 + 1];
        
x3r = a[idx1] - a[idx3];
        
x3i = a[idx1 + 1] - a[idx3 + 1];
        
a[offa] = x0r + x2r;
        
a[offa + 1] = x0i + x2i;
        
a[idx1] = x0r - x2r;
        
a[idx1 + 1] = x0i - x2i;
        
a[idx2] = x1r - x3i;
        
a[idx2 + 1] = x1i + x3r;
        
a[idx3] = x1r + x3i;
        
a[idx3 + 1] = x1i - x3r;
        
wn4r = w[startw + 1];
        
csc1 = w[startw + 2];
        
csc3 = w[startw + 3];
        
wd1r = 1;
        
wd1i = 0;
        
wd3r = 1;
        
wd3i = 0;
        
k = 0;
        
for (int j = 2; j < mh - 2; j += 4) {
            
k += 4;
            
idx4 = startw + k;
            
wk1r = csc1 * (wd1r + w[idx4]);
            
wk1i = csc1 * (wd1i + w[idx4 + 1]);
            
wk3r = csc3 * (wd3r + w[idx4 + 2]);
            
wk3i = csc3 * (wd3i + w[idx4 + 3]);
            
wd1r = w[idx4];
            
wd1i = w[idx4 + 1];
            
wd3r = w[idx4 + 2];
            
wd3i = w[idx4 + 3];
            
j1 = j + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
idx5 = offa + j;
            
x0r = a[idx5] + a[idx2];
            
x0i = a[idx5 + 1] + a[idx2 + 1];
            
x1r = a[idx5] - a[idx2];
            
x1i = a[idx5 + 1] - a[idx2 + 1];
            
y0r = a[idx5 + 2] + a[idx2 + 2];
            
y0i = a[idx5 + 3] + a[idx2 + 3];
            
y1r = a[idx5 + 2] - a[idx2 + 2];
            
y1i = a[idx5 + 3] - a[idx2 + 3];
            
x2r = a[idx1] + a[idx3];
            
x2i = a[idx1 + 1] + a[idx3 + 1];
            
x3r = a[idx1] - a[idx3];
            
x3i = a[idx1 + 1] - a[idx3 + 1];
            
y2r = a[idx1 + 2] + a[idx3 + 2];
            
y2i = a[idx1 + 3] + a[idx3 + 3];
            
y3r = a[idx1 + 2] - a[idx3 + 2];
            
y3i = a[idx1 + 3] - a[idx3 + 3];
            
a[idx5] = x0r + x2r;
            
a[idx5 + 1] = x0i + x2i;
            
a[idx5 + 2] = y0r + y2r;
            
a[idx5 + 3] = y0i + y2i;
            
a[idx1] = x0r - x2r;
            
a[idx1 + 1] = x0i - x2i;
            
a[idx1 + 2] = y0r - y2r;
            
a[idx1 + 3] = y0i - y2i;
            
x0r = x1r - x3i;
            
x0i = x1i + x3r;
            
a[idx2] = wk1r * x0r - wk1i * x0i;
            
a[idx2 + 1] = wk1r * x0i + wk1i * x0r;
            
x0r = y1r - y3i;
            
x0i = y1i + y3r;
            
a[idx2 + 2] = wd1r * x0r - wd1i * x0i;
            
a[idx2 + 3] = wd1r * x0i + wd1i * x0r;
            
x0r = x1r + x3i;
            
x0i = x1i - x3r;
            
a[idx3] = wk3r * x0r + wk3i * x0i;
            
a[idx3 + 1] = wk3r * x0i - wk3i * x0r;
            
x0r = y1r + y3i;
            
x0i = y1i - y3r;
            
a[idx3 + 2] = wd3r * x0r + wd3i * x0i;
            
a[idx3 + 3] = wd3r * x0i - wd3i * x0r;
            
j0 = m - j;
            
j1 = j0 + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx0 = offa + j0;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
x0r = a[idx0] + a[idx2];
            
x0i = a[idx0 + 1] + a[idx2 + 1];
            
x1r = a[idx0] - a[idx2];
            
x1i = a[idx0 + 1] - a[idx2 + 1];
            
y0r = a[idx0 - 2] + a[idx2 - 2];
            
y0i = a[idx0 - 1] + a[idx2 - 1];
            
y1r = a[idx0 - 2] - a[idx2 - 2];
            
y1i = a[idx0 - 1] - a[idx2 - 1];
            
x2r = a[idx1] + a[idx3];
            
x2i = a[idx1 + 1] + a[idx3 + 1];
            
x3r = a[idx1] - a[idx3];
            
x3i = a[idx1 + 1] - a[idx3 + 1];
            
y2r = a[idx1 - 2] + a[idx3 - 2];
            
y2i = a[idx1 - 1] + a[idx3 - 1];
            
y3r = a[idx1 - 2] - a[idx3 - 2];
            
y3i = a[idx1 - 1] - a[idx3 - 1];
            
a[idx0] = x0r + x2r;
            
a[idx0 + 1] = x0i + x2i;
            
a[idx0 - 2] = y0r + y2r;
            
a[idx0 - 1] = y0i + y2i;
            
a[idx1] = x0r - x2r;
            
a[idx1 + 1] = x0i - x2i;
            
a[idx1 - 2] = y0r - y2r;
            
a[idx1 - 1] = y0i - y2i;
            
x0r = x1r - x3i;
            
x0i = x1i + x3r;
            
a[idx2] = wk1i * x0r - wk1r * x0i;
            
a[idx2 + 1] = wk1i * x0i + wk1r * x0r;
            
x0r = y1r - y3i;
            
x0i = y1i + y3r;
            
a[idx2 - 2] = wd1i * x0r - wd1r * x0i;
            
a[idx2 - 1] = wd1i * x0i + wd1r * x0r;
            
x0r = x1r + x3i;
            
x0i = x1i - x3r;
            
a[idx3] = wk3i * x0r + wk3r * x0i;
            
a[idx3 + 1] = wk3i * x0i - wk3r * x0r;
            
x0r = y1r + y3i;
            
x0i = y1i - y3r;
            
a[offa + j3 - 2] = wd3i * x0r + wd3r * x0i;
            
a[offa + j3 - 1] = wd3i * x0i - wd3r * x0r;
        
}
        
wk1r = csc1 * (wd1r + wn4r);
        
wk1i = csc1 * (wd1i + wn4r);
        
wk3r = csc3 * (wd3r - wn4r);
        
wk3i = csc3 * (wd3i - wn4r);
        
j0 = mh;
        
j1 = j0 + m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx0 = offa + j0;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a[idx0 - 2] + a[idx2 - 2];
        
x0i = a[idx0 - 1] + a[idx2 - 1];
        
x1r = a[idx0 - 2] - a[idx2 - 2];
        
x1i = a[idx0 - 1] - a[idx2 - 1];
        
x2r = a[idx1 - 2] + a[idx3 - 2];
        
x2i = a[idx1 - 1] + a[idx3 - 1];
        
x3r = a[idx1 - 2] - a[idx3 - 2];
        
x3i = a[idx1 - 1] - a[idx3 - 1];
        
a[idx0 - 2] = x0r + x2r;
        
a[idx0 - 1] = x0i + x2i;
        
a[idx1 - 2] = x0r - x2r;
        
a[idx1 - 1] = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
a[idx2 - 2] = wk1r * x0r - wk1i * x0i;
        
a[idx2 - 1] = wk1r * x0i + wk1i * x0r;
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
a[idx3 - 2] = wk3r * x0r + wk3i * x0i;
        
a[idx3 - 1] = wk3r * x0i - wk3i * x0r;
        
x0r = a[idx0] + a[idx2];
        
x0i = a[idx0 + 1] + a[idx2 + 1];
        
x1r = a[idx0] - a[idx2];
        
x1i = a[idx0 + 1] - a[idx2 + 1];
        
x2r = a[idx1] + a[idx3];
        
x2i = a[idx1 + 1] + a[idx3 + 1];
        
x3r = a[idx1] - a[idx3];
        
x3i = a[idx1 + 1] - a[idx3 + 1];
        
a[idx0] = x0r + x2r;
        
a[idx0 + 1] = x0i + x2i;
        
a[idx1] = x0r - x2r;
        
a[idx1 + 1] = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
a[idx2] = wn4r * (x0r - x0i);
        
a[idx2 + 1] = wn4r * (x0i + x0r);
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
a[idx3] = -wn4r * (x0r + x0i);
        
a[idx3 + 1] = -wn4r * (x0i - x0r);
        
x0r = a[idx0 + 2] + a[idx2 + 2];
        
x0i = a[idx0 + 3] + a[idx2 + 3];
        
x1r = a[idx0 + 2] - a[idx2 + 2];
        
x1i = a[idx0 + 3] - a[idx2 + 3];
        
x2r = a[idx1 + 2] + a[idx3 + 2];
        
x2i = a[idx1 + 3] + a[idx3 + 3];
        
x3r = a[idx1 + 2] - a[idx3 + 2];
        
x3i = a[idx1 + 3] - a[idx3 + 3];
        
a[idx0 + 2] = x0r + x2r;
        
a[idx0 + 3] = x0i + x2i;
        
a[idx1 + 2] = x0r - x2r;
        
a[idx1 + 3] = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
a[idx2 + 2] = wk1i * x0r - wk1r * x0i;
        
a[idx2 + 3] = wk1i * x0i + wk1r * x0r;
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
a[idx3 + 2] = wk3i * x0r + wk3r * x0i;
        
a[idx3 + 3] = wk3i * x0i - wk3r * x0r;
    
}

    
public static void cftf1st(long n, DoubleLargeArray a, long offa, DoubleLargeArray w, long startw)
    
{
        
long j0, j1, j2, j3, k, m, mh;
        
double wn4r, csc1, csc3, wk1r, wk1i, wk3r, wk3i, wd1r, wd1i, wd3r, wd3i;
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i;
        
long idx0, idx1, idx2, idx3, idx4, idx5;
        
mh = n >> 3l;
        
m = 2 * mh;
        
j1 = m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a.getDouble(offa) + a.getDouble(idx2);
        
x0i = a.getDouble(offa + 1) + a.getDouble(idx2 + 1);
        
x1r = a.getDouble(offa) - a.getDouble(idx2);
        
x1i = a.getDouble(offa + 1) - a.getDouble(idx2 + 1);
        
x2r = a.getDouble(idx1) + a.getDouble(idx3);
        
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
        
x3r = a.getDouble(idx1) - a.getDouble(idx3);
        
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
        
a.setDouble(offa, x0r + x2r);
        
a.setDouble(offa + 1, x0i + x2i);
        
a.setDouble(idx1, x0r - x2r);
        
a.setDouble(idx1 + 1, x0i - x2i);
        
a.setDouble(idx2, x1r - x3i);
        
a.setDouble(idx2 + 1, x1i + x3r);
        
a.setDouble(idx3, x1r + x3i);
        
a.setDouble(idx3 + 1, x1i - x3r);
        
wn4r = w.getDouble(startw + 1);
        
csc1 = w.getDouble(startw + 2);
        
csc3 = w.getDouble(startw + 3);
        
wd1r = 1;
        
wd1i = 0;
        
wd3r = 1;
        
wd3i = 0;
        
k = 0;
        
for (int j = 2; j < mh - 2; j += 4) {
            
k += 4;
            
idx4 = startw + k;
            
wk1r = csc1 * (wd1r + w.getDouble(idx4));
            
wk1i = csc1 * (wd1i + w.getDouble(idx4 + 1));
            
wk3r = csc3 * (wd3r + w.getDouble(idx4 + 2));
            
wk3i = csc3 * (wd3i + w.getDouble(idx4 + 3));
            
wd1r = w.getDouble(idx4);
            
wd1i = w.getDouble(idx4 + 1);
            
wd3r = w.getDouble(idx4 + 2);
            
wd3i = w.getDouble(idx4 + 3);
            
j1 = j + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
idx5 = offa + j;
            
x0r = a.getDouble(idx5) + a.getDouble(idx2);
            
x0i = a.getDouble(idx5 + 1) + a.getDouble(idx2 + 1);
            
x1r = a.getDouble(idx5) - a.getDouble(idx2);
            
x1i = a.getDouble(idx5 + 1) - a.getDouble(idx2 + 1);
            
y0r = a.getDouble(idx5 + 2) + a.getDouble(idx2 + 2);
            
y0i = a.getDouble(idx5 + 3) + a.getDouble(idx2 + 3);
            
y1r = a.getDouble(idx5 + 2) - a.getDouble(idx2 + 2);
            
y1i = a.getDouble(idx5 + 3) - a.getDouble(idx2 + 3);
            
x2r = a.getDouble(idx1) + a.getDouble(idx3);
            
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
            
x3r = a.getDouble(idx1) - a.getDouble(idx3);
            
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
            
y2r = a.getDouble(idx1 + 2) + a.getDouble(idx3 + 2);
            
y2i = a.getDouble(idx1 + 3) + a.getDouble(idx3 + 3);
            
y3r = a.getDouble(idx1 + 2) - a.getDouble(idx3 + 2);
            
y3i = a.getDouble(idx1 + 3) - a.getDouble(idx3 + 3);
            
a.setDouble(idx5, x0r + x2r);
            
a.setDouble(idx5 + 1, x0i + x2i);
            
a.setDouble(idx5 + 2, y0r + y2r);
            
a.setDouble(idx5 + 3, y0i + y2i);
            
a.setDouble(idx1, x0r - x2r);
            
a.setDouble(idx1 + 1, x0i - x2i);
            
a.setDouble(idx1 + 2, y0r - y2r);
            
a.setDouble(idx1 + 3, y0i - y2i);
            
x0r = x1r - x3i;
            
x0i = x1i + x3r;
            
a.setDouble(idx2, wk1r * x0r - wk1i * x0i);
            
a.setDouble(idx2 + 1, wk1r * x0i + wk1i * x0r);
            
x0r = y1r - y3i;
            
x0i = y1i + y3r;
            
a.setDouble(idx2 + 2, wd1r * x0r - wd1i * x0i);
            
a.setDouble(idx2 + 3, wd1r * x0i + wd1i * x0r);
            
x0r = x1r + x3i;
            
x0i = x1i - x3r;
            
a.setDouble(idx3, wk3r * x0r + wk3i * x0i);
            
a.setDouble(idx3 + 1, wk3r * x0i - wk3i * x0r);
            
x0r = y1r + y3i;
            
x0i = y1i - y3r;
            
a.setDouble(idx3 + 2, wd3r * x0r + wd3i * x0i);
            
a.setDouble(idx3 + 3, wd3r * x0i - wd3i * x0r);
            
j0 = m - j;
            
j1 = j0 + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx0 = offa + j0;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
x0r = a.getDouble(idx0) + a.getDouble(idx2);
            
x0i = a.getDouble(idx0 + 1) + a.getDouble(idx2 + 1);
            
x1r = a.getDouble(idx0) - a.getDouble(idx2);
            
x1i = a.getDouble(idx0 + 1) - a.getDouble(idx2 + 1);
            
y0r = a.getDouble(idx0 - 2) + a.getDouble(idx2 - 2);
            
y0i = a.getDouble(idx0 - 1) + a.getDouble(idx2 - 1);
            
y1r = a.getDouble(idx0 - 2) - a.getDouble(idx2 - 2);
            
y1i = a.getDouble(idx0 - 1) - a.getDouble(idx2 - 1);
            
x2r = a.getDouble(idx1) + a.getDouble(idx3);
            
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
            
x3r = a.getDouble(idx1) - a.getDouble(idx3);
            
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
            
y2r = a.getDouble(idx1 - 2) + a.getDouble(idx3 - 2);
            
y2i = a.getDouble(idx1 - 1) + a.getDouble(idx3 - 1);
            
y3r = a.getDouble(idx1 - 2) - a.getDouble(idx3 - 2);
            
y3i = a.getDouble(idx1 - 1) - a.getDouble(idx3 - 1);
            
a.setDouble(idx0, x0r + x2r);
            
a.setDouble(idx0 + 1, x0i + x2i);
            
a.setDouble(idx0 - 2, y0r + y2r);
            
a.setDouble(idx0 - 1, y0i + y2i);
            
a.setDouble(idx1, x0r - x2r);
            
a.setDouble(idx1 + 1, x0i - x2i);
            
a.setDouble(idx1 - 2, y0r - y2r);
            
a.setDouble(idx1 - 1, y0i - y2i);
            
x0r = x1r - x3i;
            
x0i = x1i + x3r;
            
a.setDouble(idx2, wk1i * x0r - wk1r * x0i);
            
a.setDouble(idx2 + 1, wk1i * x0i + wk1r * x0r);
            
x0r = y1r - y3i;
            
x0i = y1i + y3r;
            
a.setDouble(idx2 - 2, wd1i * x0r - wd1r * x0i);
            
a.setDouble(idx2 - 1, wd1i * x0i + wd1r * x0r);
            
x0r = x1r + x3i;
            
x0i = x1i - x3r;
            
a.setDouble(idx3, wk3i * x0r + wk3r * x0i);
            
a.setDouble(idx3 + 1, wk3i * x0i - wk3r * x0r);
            
x0r = y1r + y3i;
            
x0i = y1i - y3r;
            
a.setDouble(offa + j3 - 2, wd3i * x0r + wd3r * x0i);
            
a.setDouble(offa + j3 - 1, wd3i * x0i - wd3r * x0r);
        
}
        
wk1r = csc1 * (wd1r + wn4r);
        
wk1i = csc1 * (wd1i + wn4r);
        
wk3r = csc3 * (wd3r - wn4r);
        
wk3i = csc3 * (wd3i - wn4r);
        
j0 = mh;
        
j1 = j0 + m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx0 = offa + j0;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a.getDouble(idx0 - 2) + a.getDouble(idx2 - 2);
        
x0i = a.getDouble(idx0 - 1) + a.getDouble(idx2 - 1);
        
x1r = a.getDouble(idx0 - 2) - a.getDouble(idx2 - 2);
        
x1i = a.getDouble(idx0 - 1) - a.getDouble(idx2 - 1);
        
x2r = a.getDouble(idx1 - 2) + a.getDouble(idx3 - 2);
        
x2i = a.getDouble(idx1 - 1) + a.getDouble(idx3 - 1);
        
x3r = a.getDouble(idx1 - 2) - a.getDouble(idx3 - 2);
        
x3i = a.getDouble(idx1 - 1) - a.getDouble(idx3 - 1);
        
a.setDouble(idx0 - 2, x0r + x2r);
        
a.setDouble(idx0 - 1, x0i + x2i);
        
a.setDouble(idx1 - 2, x0r - x2r);
        
a.setDouble(idx1 - 1, x0i - x2i);
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
a.setDouble(idx2 - 2, wk1r * x0r - wk1i * x0i);
        
a.setDouble(idx2 - 1, wk1r * x0i + wk1i * x0r);
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
a.setDouble(idx3 - 2, wk3r * x0r + wk3i * x0i);
        
a.setDouble(idx3 - 1, wk3r * x0i - wk3i * x0r);
        
x0r = a.getDouble(idx0) + a.getDouble(idx2);
        
x0i = a.getDouble(idx0 + 1) + a.getDouble(idx2 + 1);
        
x1r = a.getDouble(idx0) - a.getDouble(idx2);
        
x1i = a.getDouble(idx0 + 1) - a.getDouble(idx2 + 1);
        
x2r = a.getDouble(idx1) + a.getDouble(idx3);
        
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
        
x3r = a.getDouble(idx1) - a.getDouble(idx3);
        
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
        
a.setDouble(idx0, x0r + x2r);
        
a.setDouble(idx0 + 1, x0i + x2i);
        
a.setDouble(idx1, x0r - x2r);
        
a.setDouble(idx1 + 1, x0i - x2i);
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
a.setDouble(idx2, wn4r * (x0r - x0i));
        
a.setDouble(idx2 + 1, wn4r * (x0i + x0r));
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
a.setDouble(idx3, -wn4r * (x0r + x0i));
        
a.setDouble(idx3 + 1, -wn4r * (x0i - x0r));
        
x0r = a.getDouble(idx0 + 2) + a.getDouble(idx2 + 2);
        
x0i = a.getDouble(idx0 + 3) + a.getDouble(idx2 + 3);
        
x1r = a.getDouble(idx0 + 2) - a.getDouble(idx2 + 2);
        
x1i = a.getDouble(idx0 + 3) - a.getDouble(idx2 + 3);
        
x2r = a.getDouble(idx1 + 2) + a.getDouble(idx3 + 2);
        
x2i = a.getDouble(idx1 + 3) + a.getDouble(idx3 + 3);
        
x3r = a.getDouble(idx1 + 2) - a.getDouble(idx3 + 2);
        
x3i = a.getDouble(idx1 + 3) - a.getDouble(idx3 + 3);
        
a.setDouble(idx0 + 2, x0r + x2r);
        
a.setDouble(idx0 + 3, x0i + x2i);
        
a.setDouble(idx1 + 2, x0r - x2r);
        
a.setDouble(idx1 + 3, x0i - x2i);
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
a.setDouble(idx2 + 2, wk1i * x0r - wk1r * x0i);
        
a.setDouble(idx2 + 3, wk1i * x0i + wk1r * x0r);
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
a.setDouble(idx3 + 2, wk3i * x0r + wk3r * x0i);
        
a.setDouble(idx3 + 3, wk3i * x0i - wk3r * x0r);
    
}

    
public static void cftb1st(int n, double[] a, int offa, double[] w, int startw)
    
{
        
int j0, j1, j2, j3, k, m, mh;
        
double wn4r, csc1, csc3, wk1r, wk1i, wk3r, wk3i, wd1r, wd1i, wd3r, wd3i;
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i;
        
int idx0, idx1, idx2, idx3, idx4, idx5;
        
mh = n >> 3;
        
m = 2 * mh;
        
j1 = m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;

        
x0r = a[offa] + a[idx2];
        
x0i = -a[offa + 1] - a[idx2 + 1];
        
x1r = a[offa] - a[idx2];
        
x1i = -a[offa + 1] + a[idx2 + 1];
        
x2r = a[idx1] + a[idx3];
        
x2i = a[idx1 + 1] + a[idx3 + 1];
        
x3r = a[idx1] - a[idx3];
        
x3i = a[idx1 + 1] - a[idx3 + 1];
        
a[offa] = x0r + x2r;
        
a[offa + 1] = x0i - x2i;
        
a[idx1] = x0r - x2r;
        
a[idx1 + 1] = x0i + x2i;
        
a[idx2] = x1r + x3i;
        
a[idx2 + 1] = x1i + x3r;
        
a[idx3] = x1r - x3i;
        
a[idx3 + 1] = x1i - x3r;
        
wn4r = w[startw + 1];
        
csc1 = w[startw + 2];
        
csc3 = w[startw + 3];
        
wd1r = 1;
        
wd1i = 0;
        
wd3r = 1;
        
wd3i = 0;
        
k = 0;
        
for (int j = 2; j < mh - 2; j += 4) {
            
k += 4;
            
idx4 = startw + k;
            
wk1r = csc1 * (wd1r + w[idx4]);
            
wk1i = csc1 * (wd1i + w[idx4 + 1]);
            
wk3r = csc3 * (wd3r + w[idx4 + 2]);
            
wk3i = csc3 * (wd3i + w[idx4 + 3]);
            
wd1r = w[idx4];
            
wd1i = w[idx4 + 1];
            
wd3r = w[idx4 + 2];
            
wd3i = w[idx4 + 3];
            
j1 = j + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
idx5 = offa + j;
            
x0r = a[idx5] + a[idx2];
            
x0i = -a[idx5 + 1] - a[idx2 + 1];
            
x1r = a[idx5] - a[offa + j2];
            
x1i = -a[idx5 + 1] + a[idx2 + 1];
            
y0r = a[idx5 + 2] + a[idx2 + 2];
            
y0i = -a[idx5 + 3] - a[idx2 + 3];
            
y1r = a[idx5 + 2] - a[idx2 + 2];
            
y1i = -a[idx5 + 3] + a[idx2 + 3];
            
x2r = a[idx1] + a[idx3];
            
x2i = a[idx1 + 1] + a[idx3 + 1];
            
x3r = a[idx1] - a[idx3];
            
x3i = a[idx1 + 1] - a[idx3 + 1];
            
y2r = a[idx1 + 2] + a[idx3 + 2];
            
y2i = a[idx1 + 3] + a[idx3 + 3];
            
y3r = a[idx1 + 2] - a[idx3 + 2];
            
y3i = a[idx1 + 3] - a[idx3 + 3];
            
a[idx5] = x0r + x2r;
            
a[idx5 + 1] = x0i - x2i;
            
a[idx5 + 2] = y0r + y2r;
            
a[idx5 + 3] = y0i - y2i;
            
a[idx1] = x0r - x2r;
            
a[idx1 + 1] = x0i + x2i;
            
a[idx1 + 2] = y0r - y2r;
            
a[idx1 + 3] = y0i + y2i;
            
x0r = x1r + x3i;
            
x0i = x1i + x3r;
            
a[idx2] = wk1r * x0r - wk1i * x0i;
            
a[idx2 + 1] = wk1r * x0i + wk1i * x0r;
            
x0r = y1r + y3i;
            
x0i = y1i + y3r;
            
a[idx2 + 2] = wd1r * x0r - wd1i * x0i;
            
a[idx2 + 3] = wd1r * x0i + wd1i * x0r;
            
x0r = x1r - x3i;
            
x0i = x1i - x3r;
            
a[idx3] = wk3r * x0r + wk3i * x0i;
            
a[idx3 + 1] = wk3r * x0i - wk3i * x0r;
            
x0r = y1r - y3i;
            
x0i = y1i - y3r;
            
a[idx3 + 2] = wd3r * x0r + wd3i * x0i;
            
a[idx3 + 3] = wd3r * x0i - wd3i * x0r;
            
j0 = m - j;
            
j1 = j0 + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx0 = offa + j0;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
x0r = a[idx0] + a[idx2];
            
x0i = -a[idx0 + 1] - a[idx2 + 1];
            
x1r = a[idx0] - a[idx2];
            
x1i = -a[idx0 + 1] + a[idx2 + 1];
            
y0r = a[idx0 - 2] + a[idx2 - 2];
            
y0i = -a[idx0 - 1] - a[idx2 - 1];
            
y1r = a[idx0 - 2] - a[idx2 - 2];
            
y1i = -a[idx0 - 1] + a[idx2 - 1];
            
x2r = a[idx1] + a[idx3];
            
x2i = a[idx1 + 1] + a[idx3 + 1];
            
x3r = a[idx1] - a[idx3];
            
x3i = a[idx1 + 1] - a[idx3 + 1];
            
y2r = a[idx1 - 2] + a[idx3 - 2];
            
y2i = a[idx1 - 1] + a[idx3 - 1];
            
y3r = a[idx1 - 2] - a[idx3 - 2];
            
y3i = a[idx1 - 1] - a[idx3 - 1];
            
a[idx0] = x0r + x2r;
            
a[idx0 + 1] = x0i - x2i;
            
a[idx0 - 2] = y0r + y2r;
            
a[idx0 - 1] = y0i - y2i;
            
a[idx1] = x0r - x2r;
            
a[idx1 + 1] = x0i + x2i;
            
a[idx1 - 2] = y0r - y2r;
            
a[idx1 - 1] = y0i + y2i;
            
x0r = x1r + x3i;
            
x0i = x1i + x3r;
            
a[idx2] = wk1i * x0r - wk1r * x0i;
            
a[idx2 + 1] = wk1i * x0i + wk1r * x0r;
            
x0r = y1r + y3i;
            
x0i = y1i + y3r;
            
a[idx2 - 2] = wd1i * x0r - wd1r * x0i;
            
a[idx2 - 1] = wd1i * x0i + wd1r * x0r;
            
x0r = x1r - x3i;
            
x0i = x1i - x3r;
            
a[idx3] = wk3i * x0r + wk3r * x0i;
            
a[idx3 + 1] = wk3i * x0i - wk3r * x0r;
            
x0r = y1r - y3i;
            
x0i = y1i - y3r;
            
a[idx3 - 2] = wd3i * x0r + wd3r * x0i;
            
a[idx3 - 1] = wd3i * x0i - wd3r * x0r;
        
}
        
wk1r = csc1 * (wd1r + wn4r);
        
wk1i = csc1 * (wd1i + wn4r);
        
wk3r = csc3 * (wd3r - wn4r);
        
wk3i = csc3 * (wd3i - wn4r);
        
j0 = mh;
        
j1 = j0 + m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx0 = offa + j0;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a[idx0 - 2] + a[idx2 - 2];
        
x0i = -a[idx0 - 1] - a[idx2 - 1];
        
x1r = a[idx0 - 2] - a[idx2 - 2];
        
x1i = -a[idx0 - 1] + a[idx2 - 1];
        
x2r = a[idx1 - 2] + a[idx3 - 2];
        
x2i = a[idx1 - 1] + a[idx3 - 1];
        
x3r = a[idx1 - 2] - a[idx3 - 2];
        
x3i = a[idx1 - 1] - a[idx3 - 1];
        
a[idx0 - 2] = x0r + x2r;
        
a[idx0 - 1] = x0i - x2i;
        
a[idx1 - 2] = x0r - x2r;
        
a[idx1 - 1] = x0i + x2i;
        
x0r = x1r + x3i;
        
x0i = x1i + x3r;
        
a[idx2 - 2] = wk1r * x0r - wk1i * x0i;
        
a[idx2 - 1] = wk1r * x0i + wk1i * x0r;
        
x0r = x1r - x3i;
        
x0i = x1i - x3r;
        
a[idx3 - 2] = wk3r * x0r + wk3i * x0i;
        
a[idx3 - 1] = wk3r * x0i - wk3i * x0r;
        
x0r = a[idx0] + a[idx2];
        
x0i = -a[idx0 + 1] - a[idx2 + 1];
        
x1r = a[idx0] - a[idx2];
        
x1i = -a[idx0 + 1] + a[idx2 + 1];
        
x2r = a[idx1] + a[idx3];
        
x2i = a[idx1 + 1] + a[idx3 + 1];
        
x3r = a[idx1] - a[idx3];
        
x3i = a[idx1 + 1] - a[idx3 + 1];
        
a[idx0] = x0r + x2r;
        
a[idx0 + 1] = x0i - x2i;
        
a[idx1] = x0r - x2r;
        
a[idx1 + 1] = x0i + x2i;
        
x0r = x1r + x3i;
        
x0i = x1i + x3r;
        
a[idx2] = wn4r * (x0r - x0i);
        
a[idx2 + 1] = wn4r * (x0i + x0r);
        
x0r = x1r - x3i;
        
x0i = x1i - x3r;
        
a[idx3] = -wn4r * (x0r + x0i);
        
a[idx3 + 1] = -wn4r * (x0i - x0r);
        
x0r = a[idx0 + 2] + a[idx2 + 2];
        
x0i = -a[idx0 + 3] - a[idx2 + 3];
        
x1r = a[idx0 + 2] - a[idx2 + 2];
        
x1i = -a[idx0 + 3] + a[idx2 + 3];
        
x2r = a[idx1 + 2] + a[idx3 + 2];
        
x2i = a[idx1 + 3] + a[idx3 + 3];
        
x3r = a[idx1 + 2] - a[idx3 + 2];
        
x3i = a[idx1 + 3] - a[idx3 + 3];
        
a[idx0 + 2] = x0r + x2r;
        
a[idx0 + 3] = x0i - x2i;
        
a[idx1 + 2] = x0r - x2r;
        
a[idx1 + 3] = x0i + x2i;
        
x0r = x1r + x3i;
        
x0i = x1i + x3r;
        
a[idx2 + 2] = wk1i * x0r - wk1r * x0i;
        
a[idx2 + 3] = wk1i * x0i + wk1r * x0r;
        
x0r = x1r - x3i;
        
x0i = x1i - x3r;
        
a[idx3 + 2] = wk3i * x0r + wk3r * x0i;
        
a[idx3 + 3] = wk3i * x0i - wk3r * x0r;
    
}

    
public static void cftb1st(long n, DoubleLargeArray a, long offa, DoubleLargeArray w, long startw)
    
{
        
long j0, j1, j2, j3, k, m, mh;
        
double wn4r, csc1, csc3, wk1r, wk1i, wk3r, wk3i, wd1r, wd1i, wd3r, wd3i;
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i;
        
long idx0, idx1, idx2, idx3, idx4, idx5;
        
mh = n >> 3l;
        
m = 2 * mh;
        
j1 = m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;

        
x0r = a.getDouble(offa) + a.getDouble(idx2);
        
x0i = -a.getDouble(offa + 1) - a.getDouble(idx2 + 1);
        
x1r = a.getDouble(offa) - a.getDouble(idx2);
        
x1i = -a.getDouble(offa + 1) + a.getDouble(idx2 + 1);
        
x2r = a.getDouble(idx1) + a.getDouble(idx3);
        
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
        
x3r = a.getDouble(idx1) - a.getDouble(idx3);
        
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
        
a.setDouble(offa, x0r + x2r);
        
a.setDouble(offa + 1, x0i - x2i);
        
a.setDouble(idx1, x0r - x2r);
        
a.setDouble(idx1 + 1, x0i + x2i);
        
a.setDouble(idx2, x1r + x3i);
        
a.setDouble(idx2 + 1, x1i + x3r);
        
a.setDouble(idx3, x1r - x3i);
        
a.setDouble(idx3 + 1, x1i - x3r);
        
wn4r = w.getDouble(startw + 1);
        
csc1 = w.getDouble(startw + 2);
        
csc3 = w.getDouble(startw + 3);
        
wd1r = 1;
        
wd1i = 0;
        
wd3r = 1;
        
wd3i = 0;
        
k = 0;
        
for (long j = 2; j < mh - 2; j += 4) {
            
k += 4;
            
idx4 = startw + k;
            
wk1r = csc1 * (wd1r + w.getDouble(idx4));
            
wk1i = csc1 * (wd1i + w.getDouble(idx4 + 1));
            
wk3r = csc3 * (wd3r + w.getDouble(idx4 + 2));
            
wk3i = csc3 * (wd3i + w.getDouble(idx4 + 3));
            
wd1r = w.getDouble(idx4);
            
wd1i = w.getDouble(idx4 + 1);
            
wd3r = w.getDouble(idx4 + 2);
            
wd3i = w.getDouble(idx4 + 3);
            
j1 = j + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
idx5 = offa + j;
            
x0r = a.getDouble(idx5) + a.getDouble(idx2);
            
x0i = -a.getDouble(idx5 + 1) - a.getDouble(idx2 + 1);
            
x1r = a.getDouble(idx5) - a.getDouble(offa + j2);
            
x1i = -a.getDouble(idx5 + 1) + a.getDouble(idx2 + 1);
            
y0r = a.getDouble(idx5 + 2) + a.getDouble(idx2 + 2);
            
y0i = -a.getDouble(idx5 + 3) - a.getDouble(idx2 + 3);
            
y1r = a.getDouble(idx5 + 2) - a.getDouble(idx2 + 2);
            
y1i = -a.getDouble(idx5 + 3) + a.getDouble(idx2 + 3);
            
x2r = a.getDouble(idx1) + a.getDouble(idx3);
            
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
            
x3r = a.getDouble(idx1) - a.getDouble(idx3);
            
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
            
y2r = a.getDouble(idx1 + 2) + a.getDouble(idx3 + 2);
            
y2i = a.getDouble(idx1 + 3) + a.getDouble(idx3 + 3);
            
y3r = a.getDouble(idx1 + 2) - a.getDouble(idx3 + 2);
            
y3i = a.getDouble(idx1 + 3) - a.getDouble(idx3 + 3);
            
a.setDouble(idx5, x0r + x2r);
            
a.setDouble(idx5 + 1, x0i - x2i);
            
a.setDouble(idx5 + 2, y0r + y2r);
            
a.setDouble(idx5 + 3, y0i - y2i);
            
a.setDouble(idx1, x0r - x2r);
            
a.setDouble(idx1 + 1, x0i + x2i);
            
a.setDouble(idx1 + 2, y0r - y2r);
            
a.setDouble(idx1 + 3, y0i + y2i);
            
x0r = x1r + x3i;
            
x0i = x1i + x3r;
            
a.setDouble(idx2, wk1r * x0r - wk1i * x0i);
            
a.setDouble(idx2 + 1, wk1r * x0i + wk1i * x0r);
            
x0r = y1r + y3i;
            
x0i = y1i + y3r;
            
a.setDouble(idx2 + 2, wd1r * x0r - wd1i * x0i);
            
a.setDouble(idx2 + 3, wd1r * x0i + wd1i * x0r);
            
x0r = x1r - x3i;
            
x0i = x1i - x3r;
            
a.setDouble(idx3, wk3r * x0r + wk3i * x0i);
            
a.setDouble(idx3 + 1, wk3r * x0i - wk3i * x0r);
            
x0r = y1r - y3i;
            
x0i = y1i - y3r;
            
a.setDouble(idx3 + 2, wd3r * x0r + wd3i * x0i);
            
a.setDouble(idx3 + 3, wd3r * x0i - wd3i * x0r);
            
j0 = m - j;
            
j1 = j0 + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx0 = offa + j0;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
x0r = a.getDouble(idx0) + a.getDouble(idx2);
            
x0i = -a.getDouble(idx0 + 1) - a.getDouble(idx2 + 1);
            
x1r = a.getDouble(idx0) - a.getDouble(idx2);
            
x1i = -a.getDouble(idx0 + 1) + a.getDouble(idx2 + 1);
            
y0r = a.getDouble(idx0 - 2) + a.getDouble(idx2 - 2);
            
y0i = -a.getDouble(idx0 - 1) - a.getDouble(idx2 - 1);
            
y1r = a.getDouble(idx0 - 2) - a.getDouble(idx2 - 2);
            
y1i = -a.getDouble(idx0 - 1) + a.getDouble(idx2 - 1);
            
x2r = a.getDouble(idx1) + a.getDouble(idx3);
            
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
            
x3r = a.getDouble(idx1) - a.getDouble(idx3);
            
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
            
y2r = a.getDouble(idx1 - 2) + a.getDouble(idx3 - 2);
            
y2i = a.getDouble(idx1 - 1) + a.getDouble(idx3 - 1);
            
y3r = a.getDouble(idx1 - 2) - a.getDouble(idx3 - 2);
            
y3i = a.getDouble(idx1 - 1) - a.getDouble(idx3 - 1);
            
a.setDouble(idx0, x0r + x2r);
            
a.setDouble(idx0 + 1, x0i - x2i);
            
a.setDouble(idx0 - 2, y0r + y2r);
            
a.setDouble(idx0 - 1, y0i - y2i);
            
a.setDouble(idx1, x0r - x2r);
            
a.setDouble(idx1 + 1, x0i + x2i);
            
a.setDouble(idx1 - 2, y0r - y2r);
            
a.setDouble(idx1 - 1, y0i + y2i);
            
x0r = x1r + x3i;
            
x0i = x1i + x3r;
            
a.setDouble(idx2, wk1i * x0r - wk1r * x0i);
            
a.setDouble(idx2 + 1, wk1i * x0i + wk1r * x0r);
            
x0r = y1r + y3i;
            
x0i = y1i + y3r;
            
a.setDouble(idx2 - 2, wd1i * x0r - wd1r * x0i);
            
a.setDouble(idx2 - 1, wd1i * x0i + wd1r * x0r);
            
x0r = x1r - x3i;
            
x0i = x1i - x3r;
            
a.setDouble(idx3, wk3i * x0r + wk3r * x0i);
            
a.setDouble(idx3 + 1, wk3i * x0i - wk3r * x0r);
            
x0r = y1r - y3i;
            
x0i = y1i - y3r;
            
a.setDouble(idx3 - 2, wd3i * x0r + wd3r * x0i);
            
a.setDouble(idx3 - 1, wd3i * x0i - wd3r * x0r);
        
}
        
wk1r = csc1 * (wd1r + wn4r);
        
wk1i = csc1 * (wd1i + wn4r);
        
wk3r = csc3 * (wd3r - wn4r);
        
wk3i = csc3 * (wd3i - wn4r);
        
j0 = mh;
        
j1 = j0 + m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx0 = offa + j0;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a.getDouble(idx0 - 2) + a.getDouble(idx2 - 2);
        
x0i = -a.getDouble(idx0 - 1) - a.getDouble(idx2 - 1);
        
x1r = a.getDouble(idx0 - 2) - a.getDouble(idx2 - 2);
        
x1i = -a.getDouble(idx0 - 1) + a.getDouble(idx2 - 1);
        
x2r = a.getDouble(idx1 - 2) + a.getDouble(idx3 - 2);
        
x2i = a.getDouble(idx1 - 1) + a.getDouble(idx3 - 1);
        
x3r = a.getDouble(idx1 - 2) - a.getDouble(idx3 - 2);
        
x3i = a.getDouble(idx1 - 1) - a.getDouble(idx3 - 1);
        
a.setDouble(idx0 - 2, x0r + x2r);
        
a.setDouble(idx0 - 1, x0i - x2i);
        
a.setDouble(idx1 - 2, x0r - x2r);
        
a.setDouble(idx1 - 1, x0i + x2i);
        
x0r = x1r + x3i;
        
x0i = x1i + x3r;
        
a.setDouble(idx2 - 2, wk1r * x0r - wk1i * x0i);
        
a.setDouble(idx2 - 1, wk1r * x0i + wk1i * x0r);
        
x0r = x1r - x3i;
        
x0i = x1i - x3r;
        
a.setDouble(idx3 - 2, wk3r * x0r + wk3i * x0i);
        
a.setDouble(idx3 - 1, wk3r * x0i - wk3i * x0r);
        
x0r = a.getDouble(idx0) + a.getDouble(idx2);
        
x0i = -a.getDouble(idx0 + 1) - a.getDouble(idx2 + 1);
        
x1r = a.getDouble(idx0) - a.getDouble(idx2);
        
x1i = -a.getDouble(idx0 + 1) + a.getDouble(idx2 + 1);
        
x2r = a.getDouble(idx1) + a.getDouble(idx3);
        
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
        
x3r = a.getDouble(idx1) - a.getDouble(idx3);
        
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
        
a.setDouble(idx0, x0r + x2r);
        
a.setDouble(idx0 + 1, x0i - x2i);
        
a.setDouble(idx1, x0r - x2r);
        
a.setDouble(idx1 + 1, x0i + x2i);
        
x0r = x1r + x3i;
        
x0i = x1i + x3r;
        
a.setDouble(idx2, wn4r * (x0r - x0i));
        
a.setDouble(idx2 + 1, wn4r * (x0i + x0r));
        
x0r = x1r - x3i;
        
x0i = x1i - x3r;
        
a.setDouble(idx3, -wn4r * (x0r + x0i));
        
a.setDouble(idx3 + 1, -wn4r * (x0i - x0r));
        
x0r = a.getDouble(idx0 + 2) + a.getDouble(idx2 + 2);
        
x0i = -a.getDouble(idx0 + 3) - a.getDouble(idx2 + 3);
        
x1r = a.getDouble(idx0 + 2) - a.getDouble(idx2 + 2);
        
x1i = -a.getDouble(idx0 + 3) + a.getDouble(idx2 + 3);
        
x2r = a.getDouble(idx1 + 2) + a.getDouble(idx3 + 2);
        
x2i = a.getDouble(idx1 + 3) + a.getDouble(idx3 + 3);
        
x3r = a.getDouble(idx1 + 2) - a.getDouble(idx3 + 2);
        
x3i = a.getDouble(idx1 + 3) - a.getDouble(idx3 + 3);
        
a.setDouble(idx0 + 2, x0r + x2r);
        
a.setDouble(idx0 + 3, x0i - x2i);
        
a.setDouble(idx1 + 2, x0r - x2r);
        
a.setDouble(idx1 + 3, x0i + x2i);
        
x0r = x1r + x3i;
        
x0i = x1i + x3r;
        
a.setDouble(idx2 + 2, wk1i * x0r - wk1r * x0i);
        
a.setDouble(idx2 + 3, wk1i * x0i + wk1r * x0r);
        
x0r = x1r - x3i;
        
x0i = x1i - x3r;
        
a.setDouble(idx3 + 2, wk3i * x0r + wk3r * x0i);
        
a.setDouble(idx3 + 3, wk3i * x0i - wk3r * x0r);
    
}

    
public static void cftrec4_th(final int n, final double[] a, final int offa, final int nw, final double[] w)
    
{
        
int i;
        
int idiv4, m, nthreads;
        
int idx = 0;
        
nthreads = 2;
        
idiv4 = 0;
        
m = n >> 1;
        
if (n >= CommonUtils.getThreadsBeginN_1D_FFT_4Threads()) {
            
nthreads = 4;
            
idiv4 = 1;
            
m >>= 1;
        
}
        
Future<?>[] futures = new Future[nthreads];
        
final int mf = m;
        
for (i = 0; i < nthreads; i++) {
            
final int firstIdx = offa + i * m;
            
if (i != idiv4) {
                
futures[idx++] = ConcurrencyUtils.submit(new Runnable()
                
{
                    
public void run()
                    
{
                        
int isplt, j, k, m;
                        
int idx1 = firstIdx + mf;
                        
m = n;
                        
while (m > 512) {
                            
m >>= 2;
                            
cftmdl1(m, a, idx1 - m, w, nw - (m >> 1));
                        
}
                        
cftleaf(m, 1, a, idx1 - m, nw, w);
                        
k = 0;
                        
int idx2 = firstIdx - m;
                        
for (j = mf - m; j > 0; j -= m) {
                            
k++;
                            
isplt = cfttree(m, j, k, a, firstIdx, nw, w);
                            
cftleaf(m, isplt, a, idx2 + j, nw, w);
                        
}
                    
}
                
});
            
} else {
                
futures[idx++] = ConcurrencyUtils.submit(new Runnable()
                
{
                    
public void run()
                    
{
                        
int isplt, j, k, m;
                        
int idx1 = firstIdx + mf;
                        
k = 1;
                        
m = n;
                        
while (m > 512) {
                            
m >>= 2;
                            
k <<= 2;
                            
cftmdl2(m, a, idx1 - m, w, nw - m);
                        
}
                        
cftleaf(m, 0, a, idx1 - m, nw, w);
                        
k >>= 1;
                        
int idx2 = firstIdx - m;
                        
for (j = mf - m; j > 0; j -= m) {
                            
k++;
                            
isplt = cfttree(m, j, k, a, firstIdx, nw, w);
                            
cftleaf(m, isplt, a, idx2 + j, nw, w);
                        
}
                    
}
                
});
            
}
        
}
        
try {
            
ConcurrencyUtils.waitForCompletion(futures);
        
} catch (InterruptedException ex) {
            
Logger.getLogger(CommonUtils.class.getName()).log(Level.SEVERE, null, ex);
        
} catch (ExecutionException ex) {
            
Logger.getLogger(CommonUtils.class.getName()).log(Level.SEVERE, null, ex);
        
}
    
}

    
public static void cftrec4_th(final long n, final DoubleLargeArray a, final long offa, final long nw, final DoubleLargeArray w)
    
{
        
int i, idx = 0;
        
int idiv4, nthreads;
        
long m;
        
nthreads = 2;
        
idiv4 = 0;
        
m = n >> 1l;
        
if (n >= CommonUtils.getThreadsBeginN_1D_FFT_4Threads()) {
            
nthreads = 4;
            
idiv4 = 1;
            
m >>= 1l;
        
}
        
Future<?>[] futures = new Future[nthreads];
        
final long mf = m;
        
for (i = 0; i < nthreads; i++) {
            
final long firstIdx = offa + i * m;
            
if (i != idiv4) {
                
futures[idx++] = ConcurrencyUtils.submit(new Runnable()
                
{
                    
public void run()
                    
{
                        
long isplt, j, k, m;
                        
long idx1 = firstIdx + mf;
                        
m = n;
                        
while (m > 512) {
                            
m >>= 2;
                            
cftmdl1(m, a, idx1 - m, w, nw - (m >> 1l));
                        
}
                        
cftleaf(m, 1, a, idx1 - m, nw, w);
                        
k = 0;
                        
long idx2 = firstIdx - m;
                        
for (j = mf - m; j > 0; j -= m) {
                            
k++;
                            
isplt = cfttree(m, j, k, a, firstIdx, nw, w);
                            
cftleaf(m, isplt, a, idx2 + j, nw, w);
                        
}
                    
}
                
});
            
} else {
                
futures[idx++] = ConcurrencyUtils.submit(new Runnable()
                
{
                    
public void run()
                    
{
                        
long isplt, j, k, m;
                        
long idx1 = firstIdx + mf;
                        
k = 1;
                        
m = n;
                        
while (m > 512) {
                            
m >>= 2;
                            
k <<= 2;
                            
cftmdl2(m, a, idx1 - m, w, nw - m);
                        
}
                        
cftleaf(m, 0, a, idx1 - m, nw, w);
                        
k >>= 1l;
                        
long idx2 = firstIdx - m;
                        
for (j = mf - m; j > 0; j -= m) {
                            
k++;
                            
isplt = cfttree(m, j, k, a, firstIdx, nw, w);
                            
cftleaf(m, isplt, a, idx2 + j, nw, w);
                        
}
                    
}
                
});
            
}
        
}
        
try {
            
ConcurrencyUtils.waitForCompletion(futures);
        
} catch (InterruptedException ex) {
            
Logger.getLogger(CommonUtils.class.getName()).log(Level.SEVERE, null, ex);
        
} catch (ExecutionException ex) {
            
Logger.getLogger(CommonUtils.class.getName()).log(Level.SEVERE, null, ex);
        
}
    
}

    
public static void cftrec4(int n, double[] a, int offa, int nw, double[] w)
    
{
        
int isplt, j, k, m;

        
m = n;
        
int idx1 = offa + n;
        
while (m > 512) {
            
m >>= 2;
            
cftmdl1(m, a, idx1 - m, w, nw - (m >> 1));
        
}
        
cftleaf(m, 1, a, idx1 - m, nw, w);
        
k = 0;
        
int idx2 = offa - m;
        
for (j = n - m; j > 0; j -= m) {
            
k++;
            
isplt = cfttree(m, j, k, a, offa, nw, w);
            
cftleaf(m, isplt, a, idx2 + j, nw, w);
        
}
    
}

    
public static void cftrec4(long n, DoubleLargeArray a, long offa, long nw, DoubleLargeArray w)
    
{
        
long isplt, j, k, m;

        
m = n;
        
long idx1 = offa + n;
        
while (m > 512) {
            
m >>= 2;
            
cftmdl1(m, a, idx1 - m, w, nw - (m >> 1l));
        
}
        
cftleaf(m, 1, a, idx1 - m, nw, w);
        
k = 0;
        
long idx2 = offa - m;
        
for (j = n - m; j > 0; j -= m) {
            
k++;
            
isplt = cfttree(m, j, k, a, offa, nw, w);
            
cftleaf(m, isplt, a, idx2 + j, nw, w);
        
}
    
}

    
public static int cfttree(int n, int j, int k, double[] a, int offa, int nw, double[] w)
    
{
        
int i, isplt, m;
        
int idx1 = offa - n;
        
if ((k & 3) != 0) {
            
isplt = k & 1;
            
if (isplt != 0) {
                
cftmdl1(n, a, idx1 + j, w, nw - (n >> 1));
            
} else {
                
cftmdl2(n, a, idx1 + j, w, nw - n);
            
}
        
} else {
            
m = n;
            
for (i = k; (i & 3) == 0; i >>= 2) {
                
m <<= 2;
            
}
            
isplt = i & 1;
            
int idx2 = offa + j;
            
if (isplt != 0) {
                
while (m > 128) {
                    
cftmdl1(m, a, idx2 - m, w, nw - (m >> 1));
                    
m >>= 2;
                
}
            
} else {
                
while (m > 128) {
                    
cftmdl2(m, a, idx2 - m, w, nw - m);
                    
m >>= 2;
                
}
            
}
        
}
        
return isplt;
    
}

    
public static long cfttree(long n, long j, long k, DoubleLargeArray a, long offa, long nw, DoubleLargeArray w)
    
{
        
long i, isplt, m;
        
long idx1 = offa - n;
        
if ((k & 3) != 0) {
            
isplt = k & 1;
            
if (isplt != 0) {
                
cftmdl1(n, a, idx1 + j, w, nw - (n >> 1l));
            
} else {
                
cftmdl2(n, a, idx1 + j, w, nw - n);
            
}
        
} else {
            
m = n;
            
for (i = k; (i & 3) == 0; i >>= 2l) {
                
m <<= 2l;
            
}
            
isplt = i & 1;
            
long idx2 = offa + j;
            
if (isplt != 0) {
                
while (m > 128) {
                    
cftmdl1(m, a, idx2 - m, w, nw - (m >> 1l));
                    
m >>= 2l;
                
}
            
} else {
                
while (m > 128) {
                    
cftmdl2(m, a, idx2 - m, w, nw - m);
                    
m >>= 2l;
                
}
            
}
        
}
        
return isplt;
    
}

    
public static void cftleaf(int n, int isplt, double[] a, int offa, int nw, double[] w)
    
{
        
if (n == 512) {
            
cftmdl1(128, a, offa, w, nw - 64);
            
cftf161(a, offa, w, nw - 8);
            
cftf162(a, offa + 32, w, nw - 32);
            
cftf161(a, offa + 64, w, nw - 8);
            
cftf161(a, offa + 96, w, nw - 8);
            
cftmdl2(128, a, offa + 128, w, nw - 128);
            
cftf161(a, offa + 128, w, nw - 8);
            
cftf162(a, offa + 160, w, nw - 32);
            
cftf161(a, offa + 192, w, nw - 8);
            
cftf162(a, offa + 224, w, nw - 32);
            
cftmdl1(128, a, offa + 256, w, nw - 64);
            
cftf161(a, offa + 256, w, nw - 8);
            
cftf162(a, offa + 288, w, nw - 32);
            
cftf161(a, offa + 320, w, nw - 8);
            
cftf161(a, offa + 352, w, nw - 8);
            
if (isplt != 0) {
                
cftmdl1(128, a, offa + 384, w, nw - 64);
                
cftf161(a, offa + 480, w, nw - 8);
            
} else {
                
cftmdl2(128, a, offa + 384, w, nw - 128);
                
cftf162(a, offa + 480, w, nw - 32);
            
}
            
cftf161(a, offa + 384, w, nw - 8);
            
cftf162(a, offa + 416, w, nw - 32);
            
cftf161(a, offa + 448, w, nw - 8);
        
} else {
            
cftmdl1(64, a, offa, w, nw - 32);
            
cftf081(a, offa, w, nw - 8);
            
cftf082(a, offa + 16, w, nw - 8);
            
cftf081(a, offa + 32, w, nw - 8);
            
cftf081(a, offa + 48, w, nw - 8);
            
cftmdl2(64, a, offa + 64, w, nw - 64);
            
cftf081(a, offa + 64, w, nw - 8);
            
cftf082(a, offa + 80, w, nw - 8);
            
cftf081(a, offa + 96, w, nw - 8);
            
cftf082(a, offa + 112, w, nw - 8);
            
cftmdl1(64, a, offa + 128, w, nw - 32);
            
cftf081(a, offa + 128, w, nw - 8);
            
cftf082(a, offa + 144, w, nw - 8);
            
cftf081(a, offa + 160, w, nw - 8);
            
cftf081(a, offa + 176, w, nw - 8);
            
if (isplt != 0) {
                
cftmdl1(64, a, offa + 192, w, nw - 32);
                
cftf081(a, offa + 240, w, nw - 8);
            
} else {
                
cftmdl2(64, a, offa + 192, w, nw - 64);
                
cftf082(a, offa + 240, w, nw - 8);
            
}
            
cftf081(a, offa + 192, w, nw - 8);
            
cftf082(a, offa + 208, w, nw - 8);
            
cftf081(a, offa + 224, w, nw - 8);
        
}
    
}

    
public static void cftleaf(long n, long isplt, DoubleLargeArray a, long offa, long nw, DoubleLargeArray w)
    
{
        
if (n == 512) {
            
cftmdl1(128, a, offa, w, nw - 64);
            
cftf161(a, offa, w, nw - 8);
            
cftf162(a, offa + 32, w, nw - 32);
            
cftf161(a, offa + 64, w, nw - 8);
            
cftf161(a, offa + 96, w, nw - 8);
            
cftmdl2(128, a, offa + 128, w, nw - 128);
            
cftf161(a, offa + 128, w, nw - 8);
            
cftf162(a, offa + 160, w, nw - 32);
            
cftf161(a, offa + 192, w, nw - 8);
            
cftf162(a, offa + 224, w, nw - 32);
            
cftmdl1(128, a, offa + 256, w, nw - 64);
            
cftf161(a, offa + 256, w, nw - 8);
            
cftf162(a, offa + 288, w, nw - 32);
            
cftf161(a, offa + 320, w, nw - 8);
            
cftf161(a, offa + 352, w, nw - 8);
            
if (isplt != 0) {
                
cftmdl1(128, a, offa + 384, w, nw - 64);
                
cftf161(a, offa + 480, w, nw - 8);
            
} else {
                
cftmdl2(128, a, offa + 384, w, nw - 128);
                
cftf162(a, offa + 480, w, nw - 32);
            
}
            
cftf161(a, offa + 384, w, nw - 8);
            
cftf162(a, offa + 416, w, nw - 32);
            
cftf161(a, offa + 448, w, nw - 8);
        
} else {
            
cftmdl1(64, a, offa, w, nw - 32);
            
cftf081(a, offa, w, nw - 8);
            
cftf082(a, offa + 16, w, nw - 8);
            
cftf081(a, offa + 32, w, nw - 8);
            
cftf081(a, offa + 48, w, nw - 8);
            
cftmdl2(64, a, offa + 64, w, nw - 64);
            
cftf081(a, offa + 64, w, nw - 8);
            
cftf082(a, offa + 80, w, nw - 8);
            
cftf081(a, offa + 96, w, nw - 8);
            
cftf082(a, offa + 112, w, nw - 8);
            
cftmdl1(64, a, offa + 128, w, nw - 32);
            
cftf081(a, offa + 128, w, nw - 8);
            
cftf082(a, offa + 144, w, nw - 8);
            
cftf081(a, offa + 160, w, nw - 8);
            
cftf081(a, offa + 176, w, nw - 8);
            
if (isplt != 0) {
                
cftmdl1(64, a, offa + 192, w, nw - 32);
                
cftf081(a, offa + 240, w, nw - 8);
            
} else {
                
cftmdl2(64, a, offa + 192, w, nw - 64);
                
cftf082(a, offa + 240, w, nw - 8);
            
}
            
cftf081(a, offa + 192, w, nw - 8);
            
cftf082(a, offa + 208, w, nw - 8);
            
cftf081(a, offa + 224, w, nw - 8);
        
}
    
}

    
public static void cftmdl1(int n, double[] a, int offa, double[] w, int startw)
    
{
        
int j0, j1, j2, j3, k, m, mh;
        
double wn4r, wk1r, wk1i, wk3r, wk3i;
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i;
        
int idx0, idx1, idx2, idx3, idx4, idx5;

        
mh = n >> 3;
        
m = 2 * mh;
        
j1 = m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a[offa] + a[idx2];
        
x0i = a[offa + 1] + a[idx2 + 1];
        
x1r = a[offa] - a[idx2];
        
x1i = a[offa + 1] - a[idx2 + 1];
        
x2r = a[idx1] + a[idx3];
        
x2i = a[idx1 + 1] + a[idx3 + 1];
        
x3r = a[idx1] - a[idx3];
        
x3i = a[idx1 + 1] - a[idx3 + 1];
        
a[offa] = x0r + x2r;
        
a[offa + 1] = x0i + x2i;
        
a[idx1] = x0r - x2r;
        
a[idx1 + 1] = x0i - x2i;
        
a[idx2] = x1r - x3i;
        
a[idx2 + 1] = x1i + x3r;
        
a[idx3] = x1r + x3i;
        
a[idx3 + 1] = x1i - x3r;
        
wn4r = w[startw + 1];
        
k = 0;
        
for (int j = 2; j < mh; j += 2) {
            
k += 4;
            
idx4 = startw + k;
            
wk1r = w[idx4];
            
wk1i = w[idx4 + 1];
            
wk3r = w[idx4 + 2];
            
wk3i = w[idx4 + 3];
            
j1 = j + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
idx5 = offa + j;
            
x0r = a[idx5] + a[idx2];
            
x0i = a[idx5 + 1] + a[idx2 + 1];
            
x1r = a[idx5] - a[idx2];
            
x1i = a[idx5 + 1] - a[idx2 + 1];
            
x2r = a[idx1] + a[idx3];
            
x2i = a[idx1 + 1] + a[idx3 + 1];
            
x3r = a[idx1] - a[idx3];
            
x3i = a[idx1 + 1] - a[idx3 + 1];
            
a[idx5] = x0r + x2r;
            
a[idx5 + 1] = x0i + x2i;
            
a[idx1] = x0r - x2r;
            
a[idx1 + 1] = x0i - x2i;
            
x0r = x1r - x3i;
            
x0i = x1i + x3r;
            
a[idx2] = wk1r * x0r - wk1i * x0i;
            
a[idx2 + 1] = wk1r * x0i + wk1i * x0r;
            
x0r = x1r + x3i;
            
x0i = x1i - x3r;
            
a[idx3] = wk3r * x0r + wk3i * x0i;
            
a[idx3 + 1] = wk3r * x0i - wk3i * x0r;
            
j0 = m - j;
            
j1 = j0 + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx0 = offa + j0;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
x0r = a[idx0] + a[idx2];
            
x0i = a[idx0 + 1] + a[idx2 + 1];
            
x1r = a[idx0] - a[idx2];
            
x1i = a[idx0 + 1] - a[idx2 + 1];
            
x2r = a[idx1] + a[idx3];
            
x2i = a[idx1 + 1] + a[idx3 + 1];
            
x3r = a[idx1] - a[idx3];
            
x3i = a[idx1 + 1] - a[idx3 + 1];
            
a[idx0] = x0r + x2r;
            
a[idx0 + 1] = x0i + x2i;
            
a[idx1] = x0r - x2r;
            
a[idx1 + 1] = x0i - x2i;
            
x0r = x1r - x3i;
            
x0i = x1i + x3r;
            
a[idx2] = wk1i * x0r - wk1r * x0i;
            
a[idx2 + 1] = wk1i * x0i + wk1r * x0r;
            
x0r = x1r + x3i;
            
x0i = x1i - x3r;
            
a[idx3] = wk3i * x0r + wk3r * x0i;
            
a[idx3 + 1] = wk3i * x0i - wk3r * x0r;
        
}
        
j0 = mh;
        
j1 = j0 + m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx0 = offa + j0;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a[idx0] + a[idx2];
        
x0i = a[idx0 + 1] + a[idx2 + 1];
        
x1r = a[idx0] - a[idx2];
        
x1i = a[idx0 + 1] - a[idx2 + 1];
        
x2r = a[idx1] + a[idx3];
        
x2i = a[idx1 + 1] + a[idx3 + 1];
        
x3r = a[idx1] - a[idx3];
        
x3i = a[idx1 + 1] - a[idx3 + 1];
        
a[idx0] = x0r + x2r;
        
a[idx0 + 1] = x0i + x2i;
        
a[idx1] = x0r - x2r;
        
a[idx1 + 1] = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
a[idx2] = wn4r * (x0r - x0i);
        
a[idx2 + 1] = wn4r * (x0i + x0r);
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
a[idx3] = -wn4r * (x0r + x0i);
        
a[idx3 + 1] = -wn4r * (x0i - x0r);
    
}

    
public static void cftmdl1(long n, DoubleLargeArray a, long offa, DoubleLargeArray w, long startw)
    
{
        
long j0, j1, j2, j3, k, m, mh;
        
double wn4r, wk1r, wk1i, wk3r, wk3i;
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i;
        
long idx0, idx1, idx2, idx3, idx4, idx5;

        
mh = n >> 3l;
        
m = 2 * mh;
        
j1 = m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a.getDouble(offa) + a.getDouble(idx2);
        
x0i = a.getDouble(offa + 1) + a.getDouble(idx2 + 1);
        
x1r = a.getDouble(offa) - a.getDouble(idx2);
        
x1i = a.getDouble(offa + 1) - a.getDouble(idx2 + 1);
        
x2r = a.getDouble(idx1) + a.getDouble(idx3);
        
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
        
x3r = a.getDouble(idx1) - a.getDouble(idx3);
        
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
        
a.setDouble(offa, x0r + x2r);
        
a.setDouble(offa + 1, x0i + x2i);
        
a.setDouble(idx1, x0r - x2r);
        
a.setDouble(idx1 + 1, x0i - x2i);
        
a.setDouble(idx2, x1r - x3i);
        
a.setDouble(idx2 + 1, x1i + x3r);
        
a.setDouble(idx3, x1r + x3i);
        
a.setDouble(idx3 + 1, x1i - x3r);
        
wn4r = w.getDouble(startw + 1);
        
k = 0;
        
for (long j = 2; j < mh; j += 2) {
            
k += 4;
            
idx4 = startw + k;
            
wk1r = w.getDouble(idx4);
            
wk1i = w.getDouble(idx4 + 1);
            
wk3r = w.getDouble(idx4 + 2);
            
wk3i = w.getDouble(idx4 + 3);
            
j1 = j + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
idx5 = offa + j;
            
x0r = a.getDouble(idx5) + a.getDouble(idx2);
            
x0i = a.getDouble(idx5 + 1) + a.getDouble(idx2 + 1);
            
x1r = a.getDouble(idx5) - a.getDouble(idx2);
            
x1i = a.getDouble(idx5 + 1) - a.getDouble(idx2 + 1);
            
x2r = a.getDouble(idx1) + a.getDouble(idx3);
            
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
            
x3r = a.getDouble(idx1) - a.getDouble(idx3);
            
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
            
a.setDouble(idx5, x0r + x2r);
            
a.setDouble(idx5 + 1, x0i + x2i);
            
a.setDouble(idx1, x0r - x2r);
            
a.setDouble(idx1 + 1, x0i - x2i);
            
x0r = x1r - x3i;
            
x0i = x1i + x3r;
            
a.setDouble(idx2, wk1r * x0r - wk1i * x0i);
            
a.setDouble(idx2 + 1, wk1r * x0i + wk1i * x0r);
            
x0r = x1r + x3i;
            
x0i = x1i - x3r;
            
a.setDouble(idx3, wk3r * x0r + wk3i * x0i);
            
a.setDouble(idx3 + 1, wk3r * x0i - wk3i * x0r);
            
j0 = m - j;
            
j1 = j0 + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx0 = offa + j0;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
x0r = a.getDouble(idx0) + a.getDouble(idx2);
            
x0i = a.getDouble(idx0 + 1) + a.getDouble(idx2 + 1);
            
x1r = a.getDouble(idx0) - a.getDouble(idx2);
            
x1i = a.getDouble(idx0 + 1) - a.getDouble(idx2 + 1);
            
x2r = a.getDouble(idx1) + a.getDouble(idx3);
            
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
            
x3r = a.getDouble(idx1) - a.getDouble(idx3);
            
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
            
a.setDouble(idx0, x0r + x2r);
            
a.setDouble(idx0 + 1, x0i + x2i);
            
a.setDouble(idx1, x0r - x2r);
            
a.setDouble(idx1 + 1, x0i - x2i);
            
x0r = x1r - x3i;
            
x0i = x1i + x3r;
            
a.setDouble(idx2, wk1i * x0r - wk1r * x0i);
            
a.setDouble(idx2 + 1, wk1i * x0i + wk1r * x0r);
            
x0r = x1r + x3i;
            
x0i = x1i - x3r;
            
a.setDouble(idx3, wk3i * x0r + wk3r * x0i);
            
a.setDouble(idx3 + 1, wk3i * x0i - wk3r * x0r);
        
}
        
j0 = mh;
        
j1 = j0 + m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx0 = offa + j0;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a.getDouble(idx0) + a.getDouble(idx2);
        
x0i = a.getDouble(idx0 + 1) + a.getDouble(idx2 + 1);
        
x1r = a.getDouble(idx0) - a.getDouble(idx2);
        
x1i = a.getDouble(idx0 + 1) - a.getDouble(idx2 + 1);
        
x2r = a.getDouble(idx1) + a.getDouble(idx3);
        
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3 + 1);
        
x3r = a.getDouble(idx1) - a.getDouble(idx3);
        
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3 + 1);
        
a.setDouble(idx0, x0r + x2r);
        
a.setDouble(idx0 + 1, x0i + x2i);
        
a.setDouble(idx1, x0r - x2r);
        
a.setDouble(idx1 + 1, x0i - x2i);
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
a.setDouble(idx2, wn4r * (x0r - x0i));
        
a.setDouble(idx2 + 1, wn4r * (x0i + x0r));
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
a.setDouble(idx3, -wn4r * (x0r + x0i));
        
a.setDouble(idx3 + 1, -wn4r * (x0i - x0r));
    
}

    
public static void cftmdl2(int n, double[] a, int offa, double[] w, int startw)
    
{
        
int j0, j1, j2, j3, k, kr, m, mh;
        
double wn4r, wk1r, wk1i, wk3r, wk3i, wd1r, wd1i, wd3r, wd3i;
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i, y0r, y0i, y2r, y2i;
        
int idx0, idx1, idx2, idx3, idx4, idx5, idx6;

        
mh = n >> 3;
        
m = 2 * mh;
        
wn4r = w[startw + 1];
        
j1 = m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a[offa] - a[idx2 + 1];
        
x0i = a[offa + 1] + a[idx2];
        
x1r = a[offa] + a[idx2 + 1];
        
x1i = a[offa + 1] - a[idx2];
        
x2r = a[idx1] - a[idx3 + 1];
        
x2i = a[idx1 + 1] + a[idx3];
        
x3r = a[idx1] + a[idx3 + 1];
        
x3i = a[idx1 + 1] - a[idx3];
        
y0r = wn4r * (x2r - x2i);
        
y0i = wn4r * (x2i + x2r);
        
a[offa] = x0r + y0r;
        
a[offa + 1] = x0i + y0i;
        
a[idx1] = x0r - y0r;
        
a[idx1 + 1] = x0i - y0i;
        
y0r = wn4r * (x3r - x3i);
        
y0i = wn4r * (x3i + x3r);
        
a[idx2] = x1r - y0i;
        
a[idx2 + 1] = x1i + y0r;
        
a[idx3] = x1r + y0i;
        
a[idx3 + 1] = x1i - y0r;
        
k = 0;
        
kr = 2 * m;
        
for (int j = 2; j < mh; j += 2) {
            
k += 4;
            
idx4 = startw + k;
            
wk1r = w[idx4];
            
wk1i = w[idx4 + 1];
            
wk3r = w[idx4 + 2];
            
wk3i = w[idx4 + 3];
            
kr -= 4;
            
idx5 = startw + kr;
            
wd1i = w[idx5];
            
wd1r = w[idx5 + 1];
            
wd3i = w[idx5 + 2];
            
wd3r = w[idx5 + 3];
            
j1 = j + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
idx6 = offa + j;
            
x0r = a[idx6] - a[idx2 + 1];
            
x0i = a[idx6 + 1] + a[idx2];
            
x1r = a[idx6] + a[idx2 + 1];
            
x1i = a[idx6 + 1] - a[idx2];
            
x2r = a[idx1] - a[idx3 + 1];
            
x2i = a[idx1 + 1] + a[idx3];
            
x3r = a[idx1] + a[idx3 + 1];
            
x3i = a[idx1 + 1] - a[idx3];
            
y0r = wk1r * x0r - wk1i * x0i;
            
y0i = wk1r * x0i + wk1i * x0r;
            
y2r = wd1r * x2r - wd1i * x2i;
            
y2i = wd1r * x2i + wd1i * x2r;
            
a[idx6] = y0r + y2r;
            
a[idx6 + 1] = y0i + y2i;
            
a[idx1] = y0r - y2r;
            
a[idx1 + 1] = y0i - y2i;
            
y0r = wk3r * x1r + wk3i * x1i;
            
y0i = wk3r * x1i - wk3i * x1r;
            
y2r = wd3r * x3r + wd3i * x3i;
            
y2i = wd3r * x3i - wd3i * x3r;
            
a[idx2] = y0r + y2r;
            
a[idx2 + 1] = y0i + y2i;
            
a[idx3] = y0r - y2r;
            
a[idx3 + 1] = y0i - y2i;
            
j0 = m - j;
            
j1 = j0 + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx0 = offa + j0;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
x0r = a[idx0] - a[idx2 + 1];
            
x0i = a[idx0 + 1] + a[idx2];
            
x1r = a[idx0] + a[idx2 + 1];
            
x1i = a[idx0 + 1] - a[idx2];
            
x2r = a[idx1] - a[idx3 + 1];
            
x2i = a[idx1 + 1] + a[idx3];
            
x3r = a[idx1] + a[idx3 + 1];
            
x3i = a[idx1 + 1] - a[idx3];
            
y0r = wd1i * x0r - wd1r * x0i;
            
y0i = wd1i * x0i + wd1r * x0r;
            
y2r = wk1i * x2r - wk1r * x2i;
            
y2i = wk1i * x2i + wk1r * x2r;
            
a[idx0] = y0r + y2r;
            
a[idx0 + 1] = y0i + y2i;
            
a[idx1] = y0r - y2r;
            
a[idx1 + 1] = y0i - y2i;
            
y0r = wd3i * x1r + wd3r * x1i;
            
y0i = wd3i * x1i - wd3r * x1r;
            
y2r = wk3i * x3r + wk3r * x3i;
            
y2i = wk3i * x3i - wk3r * x3r;
            
a[idx2] = y0r + y2r;
            
a[idx2 + 1] = y0i + y2i;
            
a[idx3] = y0r - y2r;
            
a[idx3 + 1] = y0i - y2i;
        
}
        
wk1r = w[startw + m];
        
wk1i = w[startw + m + 1];
        
j0 = mh;
        
j1 = j0 + m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx0 = offa + j0;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a[idx0] - a[idx2 + 1];
        
x0i = a[idx0 + 1] + a[idx2];
        
x1r = a[idx0] + a[idx2 + 1];
        
x1i = a[idx0 + 1] - a[idx2];
        
x2r = a[idx1] - a[idx3 + 1];
        
x2i = a[idx1 + 1] + a[idx3];
        
x3r = a[idx1] + a[idx3 + 1];
        
x3i = a[idx1 + 1] - a[idx3];
        
y0r = wk1r * x0r - wk1i * x0i;
        
y0i = wk1r * x0i + wk1i * x0r;
        
y2r = wk1i * x2r - wk1r * x2i;
        
y2i = wk1i * x2i + wk1r * x2r;
        
a[idx0] = y0r + y2r;
        
a[idx0 + 1] = y0i + y2i;
        
a[idx1] = y0r - y2r;
        
a[idx1 + 1] = y0i - y2i;
        
y0r = wk1i * x1r - wk1r * x1i;
        
y0i = wk1i * x1i + wk1r * x1r;
        
y2r = wk1r * x3r - wk1i * x3i;
        
y2i = wk1r * x3i + wk1i * x3r;
        
a[idx2] = y0r - y2r;
        
a[idx2 + 1] = y0i - y2i;
        
a[idx3] = y0r + y2r;
        
a[idx3 + 1] = y0i + y2i;
    
}

    
public static void cftmdl2(long n, DoubleLargeArray a, long offa, DoubleLargeArray w, long startw)
    
{
        
long j0, j1, j2, j3, k, kr, m, mh;
        
double wn4r, wk1r, wk1i, wk3r, wk3i, wd1r, wd1i, wd3r, wd3i;
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i, y0r, y0i, y2r, y2i;
        
long idx0, idx1, idx2, idx3, idx4, idx5, idx6;

        
mh = n >> 3l;
        
m = 2 * mh;
        
wn4r = w.getDouble(startw + 1);
        
j1 = m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a.getDouble(offa) - a.getDouble(idx2 + 1);
        
x0i = a.getDouble(offa + 1) + a.getDouble(idx2);
        
x1r = a.getDouble(offa) + a.getDouble(idx2 + 1);
        
x1i = a.getDouble(offa + 1) - a.getDouble(idx2);
        
x2r = a.getDouble(idx1) - a.getDouble(idx3 + 1);
        
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3);
        
x3r = a.getDouble(idx1) + a.getDouble(idx3 + 1);
        
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3);
        
y0r = wn4r * (x2r - x2i);
        
y0i = wn4r * (x2i + x2r);
        
a.setDouble(offa, x0r + y0r);
        
a.setDouble(offa + 1, x0i + y0i);
        
a.setDouble(idx1, x0r - y0r);
        
a.setDouble(idx1 + 1, x0i - y0i);
        
y0r = wn4r * (x3r - x3i);
        
y0i = wn4r * (x3i + x3r);
        
a.setDouble(idx2, x1r - y0i);
        
a.setDouble(idx2 + 1, x1i + y0r);
        
a.setDouble(idx3, x1r + y0i);
        
a.setDouble(idx3 + 1, x1i - y0r);
        
k = 0;
        
kr = 2 * m;
        
for (int j = 2; j < mh; j += 2) {
            
k += 4;
            
idx4 = startw + k;
            
wk1r = w.getDouble(idx4);
            
wk1i = w.getDouble(idx4 + 1);
            
wk3r = w.getDouble(idx4 + 2);
            
wk3i = w.getDouble(idx4 + 3);
            
kr -= 4;
            
idx5 = startw + kr;
            
wd1i = w.getDouble(idx5);
            
wd1r = w.getDouble(idx5 + 1);
            
wd3i = w.getDouble(idx5 + 2);
            
wd3r = w.getDouble(idx5 + 3);
            
j1 = j + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
idx6 = offa + j;
            
x0r = a.getDouble(idx6) - a.getDouble(idx2 + 1);
            
x0i = a.getDouble(idx6 + 1) + a.getDouble(idx2);
            
x1r = a.getDouble(idx6) + a.getDouble(idx2 + 1);
            
x1i = a.getDouble(idx6 + 1) - a.getDouble(idx2);
            
x2r = a.getDouble(idx1) - a.getDouble(idx3 + 1);
            
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3);
            
x3r = a.getDouble(idx1) + a.getDouble(idx3 + 1);
            
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3);
            
y0r = wk1r * x0r - wk1i * x0i;
            
y0i = wk1r * x0i + wk1i * x0r;
            
y2r = wd1r * x2r - wd1i * x2i;
            
y2i = wd1r * x2i + wd1i * x2r;
            
a.setDouble(idx6, y0r + y2r);
            
a.setDouble(idx6 + 1, y0i + y2i);
            
a.setDouble(idx1, y0r - y2r);
            
a.setDouble(idx1 + 1, y0i - y2i);
            
y0r = wk3r * x1r + wk3i * x1i;
            
y0i = wk3r * x1i - wk3i * x1r;
            
y2r = wd3r * x3r + wd3i * x3i;
            
y2i = wd3r * x3i - wd3i * x3r;
            
a.setDouble(idx2, y0r + y2r);
            
a.setDouble(idx2 + 1, y0i + y2i);
            
a.setDouble(idx3, y0r - y2r);
            
a.setDouble(idx3 + 1, y0i - y2i);
            
j0 = m - j;
            
j1 = j0 + m;
            
j2 = j1 + m;
            
j3 = j2 + m;
            
idx0 = offa + j0;
            
idx1 = offa + j1;
            
idx2 = offa + j2;
            
idx3 = offa + j3;
            
x0r = a.getDouble(idx0) - a.getDouble(idx2 + 1);
            
x0i = a.getDouble(idx0 + 1) + a.getDouble(idx2);
            
x1r = a.getDouble(idx0) + a.getDouble(idx2 + 1);
            
x1i = a.getDouble(idx0 + 1) - a.getDouble(idx2);
            
x2r = a.getDouble(idx1) - a.getDouble(idx3 + 1);
            
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3);
            
x3r = a.getDouble(idx1) + a.getDouble(idx3 + 1);
            
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3);
            
y0r = wd1i * x0r - wd1r * x0i;
            
y0i = wd1i * x0i + wd1r * x0r;
            
y2r = wk1i * x2r - wk1r * x2i;
            
y2i = wk1i * x2i + wk1r * x2r;
            
a.setDouble(idx0, y0r + y2r);
            
a.setDouble(idx0 + 1, y0i + y2i);
            
a.setDouble(idx1, y0r - y2r);
            
a.setDouble(idx1 + 1, y0i - y2i);
            
y0r = wd3i * x1r + wd3r * x1i;
            
y0i = wd3i * x1i - wd3r * x1r;
            
y2r = wk3i * x3r + wk3r * x3i;
            
y2i = wk3i * x3i - wk3r * x3r;
            
a.setDouble(idx2, y0r + y2r);
            
a.setDouble(idx2 + 1, y0i + y2i);
            
a.setDouble(idx3, y0r - y2r);
            
a.setDouble(idx3 + 1, y0i - y2i);
        
}
        
wk1r = w.getDouble(startw + m);
        
wk1i = w.getDouble(startw + m + 1);
        
j0 = mh;
        
j1 = j0 + m;
        
j2 = j1 + m;
        
j3 = j2 + m;
        
idx0 = offa + j0;
        
idx1 = offa + j1;
        
idx2 = offa + j2;
        
idx3 = offa + j3;
        
x0r = a.getDouble(idx0) - a.getDouble(idx2 + 1);
        
x0i = a.getDouble(idx0 + 1) + a.getDouble(idx2);
        
x1r = a.getDouble(idx0) + a.getDouble(idx2 + 1);
        
x1i = a.getDouble(idx0 + 1) - a.getDouble(idx2);
        
x2r = a.getDouble(idx1) - a.getDouble(idx3 + 1);
        
x2i = a.getDouble(idx1 + 1) + a.getDouble(idx3);
        
x3r = a.getDouble(idx1) + a.getDouble(idx3 + 1);
        
x3i = a.getDouble(idx1 + 1) - a.getDouble(idx3);
        
y0r = wk1r * x0r - wk1i * x0i;
        
y0i = wk1r * x0i + wk1i * x0r;
        
y2r = wk1i * x2r - wk1r * x2i;
        
y2i = wk1i * x2i + wk1r * x2r;
        
a.setDouble(idx0, y0r + y2r);
        
a.setDouble(idx0 + 1, y0i + y2i);
        
a.setDouble(idx1, y0r - y2r);
        
a.setDouble(idx1 + 1, y0i - y2i);
        
y0r = wk1i * x1r - wk1r * x1i;
        
y0i = wk1i * x1i + wk1r * x1r;
        
y2r = wk1r * x3r - wk1i * x3i;
        
y2i = wk1r * x3i + wk1i * x3r;
        
a.setDouble(idx2, y0r - y2r);
        
a.setDouble(idx2 + 1, y0i - y2i);
        
a.setDouble(idx3, y0r + y2r);
        
a.setDouble(idx3 + 1, y0i + y2i);
    
}

    
public static void cftfx41(int n, double[] a, int offa, int nw, double[] w)
    
{
        
if (n == 128) {
            
cftf161(a, offa, w, nw - 8);
            
cftf162(a, offa + 32, w, nw - 32);
            
cftf161(a, offa + 64, w, nw - 8);
            
cftf161(a, offa + 96, w, nw - 8);
        
} else {
            
cftf081(a, offa, w, nw - 8);
            
cftf082(a, offa + 16, w, nw - 8);
            
cftf081(a, offa + 32, w, nw - 8);
            
cftf081(a, offa + 48, w, nw - 8);
        
}
    
}

    
public static void cftfx41(long n, DoubleLargeArray a, long offa, long nw, DoubleLargeArray w)
    
{
        
if (n == 128) {
            
cftf161(a, offa, w, nw - 8);
            
cftf162(a, offa + 32, w, nw - 32);
            
cftf161(a, offa + 64, w, nw - 8);
            
cftf161(a, offa + 96, w, nw - 8);
        
} else {
            
cftf081(a, offa, w, nw - 8);
            
cftf082(a, offa + 16, w, nw - 8);
            
cftf081(a, offa + 32, w, nw - 8);
            
cftf081(a, offa + 48, w, nw - 8);
        
}
    
}

    
public static void cftf161(double[] a, int offa, double[] w, int startw)
    
{
        
double wn4r, wk1r, wk1i, x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i, y4r, y4i, y5r, y5i, y6r, y6i, y7r, y7i, y8r, y8i, y9r, y9i, y10r, y10i, y11r, y11i, y12r, y12i, y13r, y13i, y14r, y14i, y15r, y15i;

        
wn4r = w[startw + 1];
        
wk1r = w[startw + 2];
        
wk1i = w[startw + 3];

        
x0r = a[offa] + a[offa + 16];
        
x0i = a[offa + 1] + a[offa + 17];
        
x1r = a[offa] - a[offa + 16];
        
x1i = a[offa + 1] - a[offa + 17];
        
x2r = a[offa + 8] + a[offa + 24];
        
x2i = a[offa + 9] + a[offa + 25];
        
x3r = a[offa + 8] - a[offa + 24];
        
x3i = a[offa + 9] - a[offa + 25];
        
y0r = x0r + x2r;
        
y0i = x0i + x2i;
        
y4r = x0r - x2r;
        
y4i = x0i - x2i;
        
y8r = x1r - x3i;
        
y8i = x1i + x3r;
        
y12r = x1r + x3i;
        
y12i = x1i - x3r;
        
x0r = a[offa + 2] + a[offa + 18];
        
x0i = a[offa + 3] + a[offa + 19];
        
x1r = a[offa + 2] - a[offa + 18];
        
x1i = a[offa + 3] - a[offa + 19];
        
x2r = a[offa + 10] + a[offa + 26];
        
x2i = a[offa + 11] + a[offa + 27];
        
x3r = a[offa + 10] - a[offa + 26];
        
x3i = a[offa + 11] - a[offa + 27];
        
y1r = x0r + x2r;
        
y1i = x0i + x2i;
        
y5r = x0r - x2r;
        
y5i = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
y9r = wk1r * x0r - wk1i * x0i;
        
y9i = wk1r * x0i + wk1i * x0r;
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
y13r = wk1i * x0r - wk1r * x0i;
        
y13i = wk1i * x0i + wk1r * x0r;
        
x0r = a[offa + 4] + a[offa + 20];
        
x0i = a[offa + 5] + a[offa + 21];
        
x1r = a[offa + 4] - a[offa + 20];
        
x1i = a[offa + 5] - a[offa + 21];
        
x2r = a[offa + 12] + a[offa + 28];
        
x2i = a[offa + 13] + a[offa + 29];
        
x3r = a[offa + 12] - a[offa + 28];
        
x3i = a[offa + 13] - a[offa + 29];
        
y2r = x0r + x2r;
        
y2i = x0i + x2i;
        
y6r = x0r - x2r;
        
y6i = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
y10r = wn4r * (x0r - x0i);
        
y10i = wn4r * (x0i + x0r);
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
y14r = wn4r * (x0r + x0i);
        
y14i = wn4r * (x0i - x0r);
        
x0r = a[offa + 6] + a[offa + 22];
        
x0i = a[offa + 7] + a[offa + 23];
        
x1r = a[offa + 6] - a[offa + 22];
        
x1i = a[offa + 7] - a[offa + 23];
        
x2r = a[offa + 14] + a[offa + 30];
        
x2i = a[offa + 15] + a[offa + 31];
        
x3r = a[offa + 14] - a[offa + 30];
        
x3i = a[offa + 15] - a[offa + 31];
        
y3r = x0r + x2r;
        
y3i = x0i + x2i;
        
y7r = x0r - x2r;
        
y7i = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
y11r = wk1i * x0r - wk1r * x0i;
        
y11i = wk1i * x0i + wk1r * x0r;
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
y15r = wk1r * x0r - wk1i * x0i;
        
y15i = wk1r * x0i + wk1i * x0r;
        
x0r = y12r - y14r;
        
x0i = y12i - y14i;
        
x1r = y12r + y14r;
        
x1i = y12i + y14i;
        
x2r = y13r - y15r;
        
x2i = y13i - y15i;
        
x3r = y13r + y15r;
        
x3i = y13i + y15i;
        
a[offa + 24] = x0r + x2r;
        
a[offa + 25] = x0i + x2i;
        
a[offa + 26] = x0r - x2r;
        
a[offa + 27] = x0i - x2i;
        
a[offa + 28] = x1r - x3i;
        
a[offa + 29] = x1i + x3r;
        
a[offa + 30] = x1r + x3i;
        
a[offa + 31] = x1i - x3r;
        
x0r = y8r + y10r;
        
x0i = y8i + y10i;
        
x1r = y8r - y10r;
        
x1i = y8i - y10i;
        
x2r = y9r + y11r;
        
x2i = y9i + y11i;
        
x3r = y9r - y11r;
        
x3i = y9i - y11i;
        
a[offa + 16] = x0r + x2r;
        
a[offa + 17] = x0i + x2i;
        
a[offa + 18] = x0r - x2r;
        
a[offa + 19] = x0i - x2i;
        
a[offa + 20] = x1r - x3i;
        
a[offa + 21] = x1i + x3r;
        
a[offa + 22] = x1r + x3i;
        
a[offa + 23] = x1i - x3r;
        
x0r = y5r - y7i;
        
x0i = y5i + y7r;
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
x0r = y5r + y7i;
        
x0i = y5i - y7r;
        
x3r = wn4r * (x0r - x0i);
        
x3i = wn4r * (x0i + x0r);
        
x0r = y4r - y6i;
        
x0i = y4i + y6r;
        
x1r = y4r + y6i;
        
x1i = y4i - y6r;
        
a[offa + 8] = x0r + x2r;
        
a[offa + 9] = x0i + x2i;
        
a[offa + 10] = x0r - x2r;
        
a[offa + 11] = x0i - x2i;
        
a[offa + 12] = x1r - x3i;
        
a[offa + 13] = x1i + x3r;
        
a[offa + 14] = x1r + x3i;
        
a[offa + 15] = x1i - x3r;
        
x0r = y0r + y2r;
        
x0i = y0i + y2i;
        
x1r = y0r - y2r;
        
x1i = y0i - y2i;
        
x2r = y1r + y3r;
        
x2i = y1i + y3i;
        
x3r = y1r - y3r;
        
x3i = y1i - y3i;
        
a[offa] = x0r + x2r;
        
a[offa + 1] = x0i + x2i;
        
a[offa + 2] = x0r - x2r;
        
a[offa + 3] = x0i - x2i;
        
a[offa + 4] = x1r - x3i;
        
a[offa + 5] = x1i + x3r;
        
a[offa + 6] = x1r + x3i;
        
a[offa + 7] = x1i - x3r;
    
}

    
public static void cftf161(DoubleLargeArray a, long offa, DoubleLargeArray w, long startw)
    
{
        
double wn4r, wk1r, wk1i, x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i, y4r, y4i, y5r, y5i, y6r, y6i, y7r, y7i, y8r, y8i, y9r, y9i, y10r, y10i, y11r, y11i, y12r, y12i, y13r, y13i, y14r, y14i, y15r, y15i;

        
wn4r = w.getDouble(startw + 1);
        
wk1r = w.getDouble(startw + 2);
        
wk1i = w.getDouble(startw + 3);

        
x0r = a.getDouble(offa) + a.getDouble(offa + 16);
        
x0i = a.getDouble(offa + 1) + a.getDouble(offa + 17);
        
x1r = a.getDouble(offa) - a.getDouble(offa + 16);
        
x1i = a.getDouble(offa + 1) - a.getDouble(offa + 17);
        
x2r = a.getDouble(offa + 8) + a.getDouble(offa + 24);
        
x2i = a.getDouble(offa + 9) + a.getDouble(offa + 25);
        
x3r = a.getDouble(offa + 8) - a.getDouble(offa + 24);
        
x3i = a.getDouble(offa + 9) - a.getDouble(offa + 25);
        
y0r = x0r + x2r;
        
y0i = x0i + x2i;
        
y4r = x0r - x2r;
        
y4i = x0i - x2i;
        
y8r = x1r - x3i;
        
y8i = x1i + x3r;
        
y12r = x1r + x3i;
        
y12i = x1i - x3r;
        
x0r = a.getDouble(offa + 2) + a.getDouble(offa + 18);
        
x0i = a.getDouble(offa + 3) + a.getDouble(offa + 19);
        
x1r = a.getDouble(offa + 2) - a.getDouble(offa + 18);
        
x1i = a.getDouble(offa + 3) - a.getDouble(offa + 19);
        
x2r = a.getDouble(offa + 10) + a.getDouble(offa + 26);
        
x2i = a.getDouble(offa + 11) + a.getDouble(offa + 27);
        
x3r = a.getDouble(offa + 10) - a.getDouble(offa + 26);
        
x3i = a.getDouble(offa + 11) - a.getDouble(offa + 27);
        
y1r = x0r + x2r;
        
y1i = x0i + x2i;
        
y5r = x0r - x2r;
        
y5i = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
y9r = wk1r * x0r - wk1i * x0i;
        
y9i = wk1r * x0i + wk1i * x0r;
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
y13r = wk1i * x0r - wk1r * x0i;
        
y13i = wk1i * x0i + wk1r * x0r;
        
x0r = a.getDouble(offa + 4) + a.getDouble(offa + 20);
        
x0i = a.getDouble(offa + 5) + a.getDouble(offa + 21);
        
x1r = a.getDouble(offa + 4) - a.getDouble(offa + 20);
        
x1i = a.getDouble(offa + 5) - a.getDouble(offa + 21);
        
x2r = a.getDouble(offa + 12) + a.getDouble(offa + 28);
        
x2i = a.getDouble(offa + 13) + a.getDouble(offa + 29);
        
x3r = a.getDouble(offa + 12) - a.getDouble(offa + 28);
        
x3i = a.getDouble(offa + 13) - a.getDouble(offa + 29);
        
y2r = x0r + x2r;
        
y2i = x0i + x2i;
        
y6r = x0r - x2r;
        
y6i = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
y10r = wn4r * (x0r - x0i);
        
y10i = wn4r * (x0i + x0r);
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
y14r = wn4r * (x0r + x0i);
        
y14i = wn4r * (x0i - x0r);
        
x0r = a.getDouble(offa + 6) + a.getDouble(offa + 22);
        
x0i = a.getDouble(offa + 7) + a.getDouble(offa + 23);
        
x1r = a.getDouble(offa + 6) - a.getDouble(offa + 22);
        
x1i = a.getDouble(offa + 7) - a.getDouble(offa + 23);
        
x2r = a.getDouble(offa + 14) + a.getDouble(offa + 30);
        
x2i = a.getDouble(offa + 15) + a.getDouble(offa + 31);
        
x3r = a.getDouble(offa + 14) - a.getDouble(offa + 30);
        
x3i = a.getDouble(offa + 15) - a.getDouble(offa + 31);
        
y3r = x0r + x2r;
        
y3i = x0i + x2i;
        
y7r = x0r - x2r;
        
y7i = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
y11r = wk1i * x0r - wk1r * x0i;
        
y11i = wk1i * x0i + wk1r * x0r;
        
x0r = x1r + x3i;
        
x0i = x1i - x3r;
        
y15r = wk1r * x0r - wk1i * x0i;
        
y15i = wk1r * x0i + wk1i * x0r;
        
x0r = y12r - y14r;
        
x0i = y12i - y14i;
        
x1r = y12r + y14r;
        
x1i = y12i + y14i;
        
x2r = y13r - y15r;
        
x2i = y13i - y15i;
        
x3r = y13r + y15r;
        
x3i = y13i + y15i;
        
a.setDouble(offa + 24, x0r + x2r);
        
a.setDouble(offa + 25, x0i + x2i);
        
a.setDouble(offa + 26, x0r - x2r);
        
a.setDouble(offa + 27, x0i - x2i);
        
a.setDouble(offa + 28, x1r - x3i);
        
a.setDouble(offa + 29, x1i + x3r);
        
a.setDouble(offa + 30, x1r + x3i);
        
a.setDouble(offa + 31, x1i - x3r);
        
x0r = y8r + y10r;
        
x0i = y8i + y10i;
        
x1r = y8r - y10r;
        
x1i = y8i - y10i;
        
x2r = y9r + y11r;
        
x2i = y9i + y11i;
        
x3r = y9r - y11r;
        
x3i = y9i - y11i;
        
a.setDouble(offa + 16, x0r + x2r);
        
a.setDouble(offa + 17, x0i + x2i);
        
a.setDouble(offa + 18, x0r - x2r);
        
a.setDouble(offa + 19, x0i - x2i);
        
a.setDouble(offa + 20, x1r - x3i);
        
a.setDouble(offa + 21, x1i + x3r);
        
a.setDouble(offa + 22, x1r + x3i);
        
a.setDouble(offa + 23, x1i - x3r);
        
x0r = y5r - y7i;
        
x0i = y5i + y7r;
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
x0r = y5r + y7i;
        
x0i = y5i - y7r;
        
x3r = wn4r * (x0r - x0i);
        
x3i = wn4r * (x0i + x0r);
        
x0r = y4r - y6i;
        
x0i = y4i + y6r;
        
x1r = y4r + y6i;
        
x1i = y4i - y6r;
        
a.setDouble(offa + 8, x0r + x2r);
        
a.setDouble(offa + 9, x0i + x2i);
        
a.setDouble(offa + 10, x0r - x2r);
        
a.setDouble(offa + 11, x0i - x2i);
        
a.setDouble(offa + 12, x1r - x3i);
        
a.setDouble(offa + 13, x1i + x3r);
        
a.setDouble(offa + 14, x1r + x3i);
        
a.setDouble(offa + 15, x1i - x3r);
        
x0r = y0r + y2r;
        
x0i = y0i + y2i;
        
x1r = y0r - y2r;
        
x1i = y0i - y2i;
        
x2r = y1r + y3r;
        
x2i = y1i + y3i;
        
x3r = y1r - y3r;
        
x3i = y1i - y3i;
        
a.setDouble(offa, x0r + x2r);
        
a.setDouble(offa + 1, x0i + x2i);
        
a.setDouble(offa + 2, x0r - x2r);
        
a.setDouble(offa + 3, x0i - x2i);
        
a.setDouble(offa + 4, x1r - x3i);
        
a.setDouble(offa + 5, x1i + x3r);
        
a.setDouble(offa + 6, x1r + x3i);
        
a.setDouble(offa + 7, x1i - x3r);
    
}

    
public static void cftf162(double[] a, int offa, double[] w, int startw)
    
{
        
double wn4r, wk1r, wk1i, wk2r, wk2i, wk3r, wk3i, x0r, x0i, x1r, x1i, x2r, x2i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i, y4r, y4i, y5r, y5i, y6r, y6i, y7r, y7i, y8r, y8i, y9r, y9i, y10r, y10i, y11r, y11i, y12r, y12i, y13r, y13i, y14r, y14i, y15r, y15i;

        
wn4r = w[startw + 1];
        
wk1r = w[startw + 4];
        
wk1i = w[startw + 5];
        
wk3r = w[startw + 6];
        
wk3i = -w[startw + 7];
        
wk2r = w[startw + 8];
        
wk2i = w[startw + 9];
        
x1r = a[offa] - a[offa + 17];
        
x1i = a[offa + 1] + a[offa + 16];
        
x0r = a[offa + 8] - a[offa + 25];
        
x0i = a[offa + 9] + a[offa + 24];
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
y0r = x1r + x2r;
        
y0i = x1i + x2i;
        
y4r = x1r - x2r;
        
y4i = x1i - x2i;
        
x1r = a[offa] + a[offa + 17];
        
x1i = a[offa + 1] - a[offa + 16];
        
x0r = a[offa + 8] + a[offa + 25];
        
x0i = a[offa + 9] - a[offa + 24];
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
y8r = x1r - x2i;
        
y8i = x1i + x2r;
        
y12r = x1r + x2i;
        
y12i = x1i - x2r;
        
x0r = a[offa + 2] - a[offa + 19];
        
x0i = a[offa + 3] + a[offa + 18];
        
x1r = wk1r * x0r - wk1i * x0i;
        
x1i = wk1r * x0i + wk1i * x0r;
        
x0r = a[offa + 10] - a[offa + 27];
        
x0i = a[offa + 11] + a[offa + 26];
        
x2r = wk3i * x0r - wk3r * x0i;
        
x2i = wk3i * x0i + wk3r * x0r;
        
y1r = x1r + x2r;
        
y1i = x1i + x2i;
        
y5r = x1r - x2r;
        
y5i = x1i - x2i;
        
x0r = a[offa + 2] + a[offa + 19];
        
x0i = a[offa + 3] - a[offa + 18];
        
x1r = wk3r * x0r - wk3i * x0i;
        
x1i = wk3r * x0i + wk3i * x0r;
        
x0r = a[offa + 10] + a[offa + 27];
        
x0i = a[offa + 11] - a[offa + 26];
        
x2r = wk1r * x0r + wk1i * x0i;
        
x2i = wk1r * x0i - wk1i * x0r;
        
y9r = x1r - x2r;
        
y9i = x1i - x2i;
        
y13r = x1r + x2r;
        
y13i = x1i + x2i;
        
x0r = a[offa + 4] - a[offa + 21];
        
x0i = a[offa + 5] + a[offa + 20];
        
x1r = wk2r * x0r - wk2i * x0i;
        
x1i = wk2r * x0i + wk2i * x0r;
        
x0r = a[offa + 12] - a[offa + 29];
        
x0i = a[offa + 13] + a[offa + 28];
        
x2r = wk2i * x0r - wk2r * x0i;
        
x2i = wk2i * x0i + wk2r * x0r;
        
y2r = x1r + x2r;
        
y2i = x1i + x2i;
        
y6r = x1r - x2r;
        
y6i = x1i - x2i;
        
x0r = a[offa + 4] + a[offa + 21];
        
x0i = a[offa + 5] - a[offa + 20];
        
x1r = wk2i * x0r - wk2r * x0i;
        
x1i = wk2i * x0i + wk2r * x0r;
        
x0r = a[offa + 12] + a[offa + 29];
        
x0i = a[offa + 13] - a[offa + 28];
        
x2r = wk2r * x0r - wk2i * x0i;
        
x2i = wk2r * x0i + wk2i * x0r;
        
y10r = x1r - x2r;
        
y10i = x1i - x2i;
        
y14r = x1r + x2r;
        
y14i = x1i + x2i;
        
x0r = a[offa + 6] - a[offa + 23];
        
x0i = a[offa + 7] + a[offa + 22];
        
x1r = wk3r * x0r - wk3i * x0i;
        
x1i = wk3r * x0i + wk3i * x0r;
        
x0r = a[offa + 14] - a[offa + 31];
        
x0i = a[offa + 15] + a[offa + 30];
        
x2r = wk1i * x0r - wk1r * x0i;
        
x2i = wk1i * x0i + wk1r * x0r;
        
y3r = x1r + x2r;
        
y3i = x1i + x2i;
        
y7r = x1r - x2r;
        
y7i = x1i - x2i;
        
x0r = a[offa + 6] + a[offa + 23];
        
x0i = a[offa + 7] - a[offa + 22];
        
x1r = wk1i * x0r + wk1r * x0i;
        
x1i = wk1i * x0i - wk1r * x0r;
        
x0r = a[offa + 14] + a[offa + 31];
        
x0i = a[offa + 15] - a[offa + 30];
        
x2r = wk3i * x0r - wk3r * x0i;
        
x2i = wk3i * x0i + wk3r * x0r;
        
y11r = x1r + x2r;
        
y11i = x1i + x2i;
        
y15r = x1r - x2r;
        
y15i = x1i - x2i;
        
x1r = y0r + y2r;
        
x1i = y0i + y2i;
        
x2r = y1r + y3r;
        
x2i = y1i + y3i;
        
a[offa] = x1r + x2r;
        
a[offa + 1] = x1i + x2i;
        
a[offa + 2] = x1r - x2r;
        
a[offa + 3] = x1i - x2i;
        
x1r = y0r - y2r;
        
x1i = y0i - y2i;
        
x2r = y1r - y3r;
        
x2i = y1i - y3i;
        
a[offa + 4] = x1r - x2i;
        
a[offa + 5] = x1i + x2r;
        
a[offa + 6] = x1r + x2i;
        
a[offa + 7] = x1i - x2r;
        
x1r = y4r - y6i;
        
x1i = y4i + y6r;
        
x0r = y5r - y7i;
        
x0i = y5i + y7r;
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
a[offa + 8] = x1r + x2r;
        
a[offa + 9] = x1i + x2i;
        
a[offa + 10] = x1r - x2r;
        
a[offa + 11] = x1i - x2i;
        
x1r = y4r + y6i;
        
x1i = y4i - y6r;
        
x0r = y5r + y7i;
        
x0i = y5i - y7r;
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
a[offa + 12] = x1r - x2i;
        
a[offa + 13] = x1i + x2r;
        
a[offa + 14] = x1r + x2i;
        
a[offa + 15] = x1i - x2r;
        
x1r = y8r + y10r;
        
x1i = y8i + y10i;
        
x2r = y9r - y11r;
        
x2i = y9i - y11i;
        
a[offa + 16] = x1r + x2r;
        
a[offa + 17] = x1i + x2i;
        
a[offa + 18] = x1r - x2r;
        
a[offa + 19] = x1i - x2i;
        
x1r = y8r - y10r;
        
x1i = y8i - y10i;
        
x2r = y9r + y11r;
        
x2i = y9i + y11i;
        
a[offa + 20] = x1r - x2i;
        
a[offa + 21] = x1i + x2r;
        
a[offa + 22] = x1r + x2i;
        
a[offa + 23] = x1i - x2r;
        
x1r = y12r - y14i;
        
x1i = y12i + y14r;
        
x0r = y13r + y15i;
        
x0i = y13i - y15r;
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
a[offa + 24] = x1r + x2r;
        
a[offa + 25] = x1i + x2i;
        
a[offa + 26] = x1r - x2r;
        
a[offa + 27] = x1i - x2i;
        
x1r = y12r + y14i;
        
x1i = y12i - y14r;
        
x0r = y13r - y15i;
        
x0i = y13i + y15r;
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
a[offa + 28] = x1r - x2i;
        
a[offa + 29] = x1i + x2r;
        
a[offa + 30] = x1r + x2i;
        
a[offa + 31] = x1i - x2r;
    
}

    
public static void cftf162(DoubleLargeArray a, long offa, DoubleLargeArray w, long startw)
    
{
        
double wn4r, wk1r, wk1i, wk2r, wk2i, wk3r, wk3i, x0r, x0i, x1r, x1i, x2r, x2i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i, y4r, y4i, y5r, y5i, y6r, y6i, y7r, y7i, y8r, y8i, y9r, y9i, y10r, y10i, y11r, y11i, y12r, y12i, y13r, y13i, y14r, y14i, y15r, y15i;

        
wn4r = w.getDouble(startw + 1);
        
wk1r = w.getDouble(startw + 4);
        
wk1i = w.getDouble(startw + 5);
        
wk3r = w.getDouble(startw + 6);
        
wk3i = -w.getDouble(startw + 7);
        
wk2r = w.getDouble(startw + 8);
        
wk2i = w.getDouble(startw + 9);
        
x1r = a.getDouble(offa) - a.getDouble(offa + 17);
        
x1i = a.getDouble(offa + 1) + a.getDouble(offa + 16);
        
x0r = a.getDouble(offa + 8) - a.getDouble(offa + 25);
        
x0i = a.getDouble(offa + 9) + a.getDouble(offa + 24);
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
y0r = x1r + x2r;
        
y0i = x1i + x2i;
        
y4r = x1r - x2r;
        
y4i = x1i - x2i;
        
x1r = a.getDouble(offa) + a.getDouble(offa + 17);
        
x1i = a.getDouble(offa + 1) - a.getDouble(offa + 16);
        
x0r = a.getDouble(offa + 8) + a.getDouble(offa + 25);
        
x0i = a.getDouble(offa + 9) - a.getDouble(offa + 24);
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
y8r = x1r - x2i;
        
y8i = x1i + x2r;
        
y12r = x1r + x2i;
        
y12i = x1i - x2r;
        
x0r = a.getDouble(offa + 2) - a.getDouble(offa + 19);
        
x0i = a.getDouble(offa + 3) + a.getDouble(offa + 18);
        
x1r = wk1r * x0r - wk1i * x0i;
        
x1i = wk1r * x0i + wk1i * x0r;
        
x0r = a.getDouble(offa + 10) - a.getDouble(offa + 27);
        
x0i = a.getDouble(offa + 11) + a.getDouble(offa + 26);
        
x2r = wk3i * x0r - wk3r * x0i;
        
x2i = wk3i * x0i + wk3r * x0r;
        
y1r = x1r + x2r;
        
y1i = x1i + x2i;
        
y5r = x1r - x2r;
        
y5i = x1i - x2i;
        
x0r = a.getDouble(offa + 2) + a.getDouble(offa + 19);
        
x0i = a.getDouble(offa + 3) - a.getDouble(offa + 18);
        
x1r = wk3r * x0r - wk3i * x0i;
        
x1i = wk3r * x0i + wk3i * x0r;
        
x0r = a.getDouble(offa + 10) + a.getDouble(offa + 27);
        
x0i = a.getDouble(offa + 11) - a.getDouble(offa + 26);
        
x2r = wk1r * x0r + wk1i * x0i;
        
x2i = wk1r * x0i - wk1i * x0r;
        
y9r = x1r - x2r;
        
y9i = x1i - x2i;
        
y13r = x1r + x2r;
        
y13i = x1i + x2i;
        
x0r = a.getDouble(offa + 4) - a.getDouble(offa + 21);
        
x0i = a.getDouble(offa + 5) + a.getDouble(offa + 20);
        
x1r = wk2r * x0r - wk2i * x0i;
        
x1i = wk2r * x0i + wk2i * x0r;
        
x0r = a.getDouble(offa + 12) - a.getDouble(offa + 29);
        
x0i = a.getDouble(offa + 13) + a.getDouble(offa + 28);
        
x2r = wk2i * x0r - wk2r * x0i;
        
x2i = wk2i * x0i + wk2r * x0r;
        
y2r = x1r + x2r;
        
y2i = x1i + x2i;
        
y6r = x1r - x2r;
        
y6i = x1i - x2i;
        
x0r = a.getDouble(offa + 4) + a.getDouble(offa + 21);
        
x0i = a.getDouble(offa + 5) - a.getDouble(offa + 20);
        
x1r = wk2i * x0r - wk2r * x0i;
        
x1i = wk2i * x0i + wk2r * x0r;
        
x0r = a.getDouble(offa + 12) + a.getDouble(offa + 29);
        
x0i = a.getDouble(offa + 13) - a.getDouble(offa + 28);
        
x2r = wk2r * x0r - wk2i * x0i;
        
x2i = wk2r * x0i + wk2i * x0r;
        
y10r = x1r - x2r;
        
y10i = x1i - x2i;
        
y14r = x1r + x2r;
        
y14i = x1i + x2i;
        
x0r = a.getDouble(offa + 6) - a.getDouble(offa + 23);
        
x0i = a.getDouble(offa + 7) + a.getDouble(offa + 22);
        
x1r = wk3r * x0r - wk3i * x0i;
        
x1i = wk3r * x0i + wk3i * x0r;
        
x0r = a.getDouble(offa + 14) - a.getDouble(offa + 31);
        
x0i = a.getDouble(offa + 15) + a.getDouble(offa + 30);
        
x2r = wk1i * x0r - wk1r * x0i;
        
x2i = wk1i * x0i + wk1r * x0r;
        
y3r = x1r + x2r;
        
y3i = x1i + x2i;
        
y7r = x1r - x2r;
        
y7i = x1i - x2i;
        
x0r = a.getDouble(offa + 6) + a.getDouble(offa + 23);
        
x0i = a.getDouble(offa + 7) - a.getDouble(offa + 22);
        
x1r = wk1i * x0r + wk1r * x0i;
        
x1i = wk1i * x0i - wk1r * x0r;
        
x0r = a.getDouble(offa + 14) + a.getDouble(offa + 31);
        
x0i = a.getDouble(offa + 15) - a.getDouble(offa + 30);
        
x2r = wk3i * x0r - wk3r * x0i;
        
x2i = wk3i * x0i + wk3r * x0r;
        
y11r = x1r + x2r;
        
y11i = x1i + x2i;
        
y15r = x1r - x2r;
        
y15i = x1i - x2i;
        
x1r = y0r + y2r;
        
x1i = y0i + y2i;
        
x2r = y1r + y3r;
        
x2i = y1i + y3i;
        
a.setDouble(offa, x1r + x2r);
        
a.setDouble(offa + 1, x1i + x2i);
        
a.setDouble(offa + 2, x1r - x2r);
        
a.setDouble(offa + 3, x1i - x2i);
        
x1r = y0r - y2r;
        
x1i = y0i - y2i;
        
x2r = y1r - y3r;
        
x2i = y1i - y3i;
        
a.setDouble(offa + 4, x1r - x2i);
        
a.setDouble(offa + 5, x1i + x2r);
        
a.setDouble(offa + 6, x1r + x2i);
        
a.setDouble(offa + 7, x1i - x2r);
        
x1r = y4r - y6i;
        
x1i = y4i + y6r;
        
x0r = y5r - y7i;
        
x0i = y5i + y7r;
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
a.setDouble(offa + 8, x1r + x2r);
        
a.setDouble(offa + 9, x1i + x2i);
        
a.setDouble(offa + 10, x1r - x2r);
        
a.setDouble(offa + 11, x1i - x2i);
        
x1r = y4r + y6i;
        
x1i = y4i - y6r;
        
x0r = y5r + y7i;
        
x0i = y5i - y7r;
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
a.setDouble(offa + 12, x1r - x2i);
        
a.setDouble(offa + 13, x1i + x2r);
        
a.setDouble(offa + 14, x1r + x2i);
        
a.setDouble(offa + 15, x1i - x2r);
        
x1r = y8r + y10r;
        
x1i = y8i + y10i;
        
x2r = y9r - y11r;
        
x2i = y9i - y11i;
        
a.setDouble(offa + 16, x1r + x2r);
        
a.setDouble(offa + 17, x1i + x2i);
        
a.setDouble(offa + 18, x1r - x2r);
        
a.setDouble(offa + 19, x1i - x2i);
        
x1r = y8r - y10r;
        
x1i = y8i - y10i;
        
x2r = y9r + y11r;
        
x2i = y9i + y11i;
        
a.setDouble(offa + 20, x1r - x2i);
        
a.setDouble(offa + 21, x1i + x2r);
        
a.setDouble(offa + 22, x1r + x2i);
        
a.setDouble(offa + 23, x1i - x2r);
        
x1r = y12r - y14i;
        
x1i = y12i + y14r;
        
x0r = y13r + y15i;
        
x0i = y13i - y15r;
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
a.setDouble(offa + 24, x1r + x2r);
        
a.setDouble(offa + 25, x1i + x2i);
        
a.setDouble(offa + 26, x1r - x2r);
        
a.setDouble(offa + 27, x1i - x2i);
        
x1r = y12r + y14i;
        
x1i = y12i - y14r;
        
x0r = y13r - y15i;
        
x0i = y13i + y15r;
        
x2r = wn4r * (x0r - x0i);
        
x2i = wn4r * (x0i + x0r);
        
a.setDouble(offa + 28, x1r - x2i);
        
a.setDouble(offa + 29, x1i + x2r);
        
a.setDouble(offa + 30, x1r + x2i);
        
a.setDouble(offa + 31, x1i - x2r);
    
}

    
public static void cftf081(double[] a, int offa, double[] w, int startw)
    
{
        
double wn4r, x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i, y4r, y4i, y5r, y5i, y6r, y6i, y7r, y7i;

        
wn4r = w[startw + 1];
        
x0r = a[offa] + a[offa + 8];
        
x0i = a[offa + 1] + a[offa + 9];
        
x1r = a[offa] - a[offa + 8];
        
x1i = a[offa + 1] - a[offa + 9];
        
x2r = a[offa + 4] + a[offa + 12];
        
x2i = a[offa + 5] + a[offa + 13];
        
x3r = a[offa + 4] - a[offa + 12];
        
x3i = a[offa + 5] - a[offa + 13];
        
y0r = x0r + x2r;
        
y0i = x0i + x2i;
        
y2r = x0r - x2r;
        
y2i = x0i - x2i;
        
y1r = x1r - x3i;
        
y1i = x1i + x3r;
        
y3r = x1r + x3i;
        
y3i = x1i - x3r;
        
x0r = a[offa + 2] + a[offa + 10];
        
x0i = a[offa + 3] + a[offa + 11];
        
x1r = a[offa + 2] - a[offa + 10];
        
x1i = a[offa + 3] - a[offa + 11];
        
x2r = a[offa + 6] + a[offa + 14];
        
x2i = a[offa + 7] + a[offa + 15];
        
x3r = a[offa + 6] - a[offa + 14];
        
x3i = a[offa + 7] - a[offa + 15];
        
y4r = x0r + x2r;
        
y4i = x0i + x2i;
        
y6r = x0r - x2r;
        
y6i = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
x2r = x1r + x3i;
        
x2i = x1i - x3r;
        
y5r = wn4r * (x0r - x0i);
        
y5i = wn4r * (x0r + x0i);
        
y7r = wn4r * (x2r - x2i);
        
y7i = wn4r * (x2r + x2i);
        
a[offa + 8] = y1r + y5r;
        
a[offa + 9] = y1i + y5i;
        
a[offa + 10] = y1r - y5r;
        
a[offa + 11] = y1i - y5i;
        
a[offa + 12] = y3r - y7i;
        
a[offa + 13] = y3i + y7r;
        
a[offa + 14] = y3r + y7i;
        
a[offa + 15] = y3i - y7r;
        
a[offa] = y0r + y4r;
        
a[offa + 1] = y0i + y4i;
        
a[offa + 2] = y0r - y4r;
        
a[offa + 3] = y0i - y4i;
        
a[offa + 4] = y2r - y6i;
        
a[offa + 5] = y2i + y6r;
        
a[offa + 6] = y2r + y6i;
        
a[offa + 7] = y2i - y6r;
    
}

    
public static void cftf081(DoubleLargeArray a, long offa, DoubleLargeArray w, long startw)
    
{
        
double wn4r, x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i, y4r, y4i, y5r, y5i, y6r, y6i, y7r, y7i;

        
wn4r = w.getDouble(startw + 1);
        
x0r = a.getDouble(offa) + a.getDouble(offa + 8);
        
x0i = a.getDouble(offa + 1) + a.getDouble(offa + 9);
        
x1r = a.getDouble(offa) - a.getDouble(offa + 8);
        
x1i = a.getDouble(offa + 1) - a.getDouble(offa + 9);
        
x2r = a.getDouble(offa + 4) + a.getDouble(offa + 12);
        
x2i = a.getDouble(offa + 5) + a.getDouble(offa + 13);
        
x3r = a.getDouble(offa + 4) - a.getDouble(offa + 12);
        
x3i = a.getDouble(offa + 5) - a.getDouble(offa + 13);
        
y0r = x0r + x2r;
        
y0i = x0i + x2i;
        
y2r = x0r - x2r;
        
y2i = x0i - x2i;
        
y1r = x1r - x3i;
        
y1i = x1i + x3r;
        
y3r = x1r + x3i;
        
y3i = x1i - x3r;
        
x0r = a.getDouble(offa + 2) + a.getDouble(offa + 10);
        
x0i = a.getDouble(offa + 3) + a.getDouble(offa + 11);
        
x1r = a.getDouble(offa + 2) - a.getDouble(offa + 10);
        
x1i = a.getDouble(offa + 3) - a.getDouble(offa + 11);
        
x2r = a.getDouble(offa + 6) + a.getDouble(offa + 14);
        
x2i = a.getDouble(offa + 7) + a.getDouble(offa + 15);
        
x3r = a.getDouble(offa + 6) - a.getDouble(offa + 14);
        
x3i = a.getDouble(offa + 7) - a.getDouble(offa + 15);
        
y4r = x0r + x2r;
        
y4i = x0i + x2i;
        
y6r = x0r - x2r;
        
y6i = x0i - x2i;
        
x0r = x1r - x3i;
        
x0i = x1i + x3r;
        
x2r = x1r + x3i;
        
x2i = x1i - x3r;
        
y5r = wn4r * (x0r - x0i);
        
y5i = wn4r * (x0r + x0i);
        
y7r = wn4r * (x2r - x2i);
        
y7i = wn4r * (x2r + x2i);
        
a.setDouble(offa + 8, y1r + y5r);
        
a.setDouble(offa + 9, y1i + y5i);
        
a.setDouble(offa + 10, y1r - y5r);
        
a.setDouble(offa + 11, y1i - y5i);
        
a.setDouble(offa + 12, y3r - y7i);
        
a.setDouble(offa + 13, y3i + y7r);
        
a.setDouble(offa + 14, y3r + y7i);
        
a.setDouble(offa + 15, y3i - y7r);
        
a.setDouble(offa, y0r + y4r);
        
a.setDouble(offa + 1, y0i + y4i);
        
a.setDouble(offa + 2, y0r - y4r);
        
a.setDouble(offa + 3, y0i - y4i);
        
a.setDouble(offa + 4, y2r - y6i);
        
a.setDouble(offa + 5, y2i + y6r);
        
a.setDouble(offa + 6, y2r + y6i);
        
a.setDouble(offa + 7, y2i - y6r);
    
}

    
public static void cftf082(double[] a, int offa, double[] w, int startw)
    
{
        
double wn4r, wk1r, wk1i, x0r, x0i, x1r, x1i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i, y4r, y4i, y5r, y5i, y6r, y6i, y7r, y7i;

        
wn4r = w[startw + 1];
        
wk1r = w[startw + 2];
        
wk1i = w[startw + 3];
        
y0r = a[offa] - a[offa + 9];
        
y0i = a[offa + 1] + a[offa + 8];
        
y1r = a[offa] + a[offa + 9];
        
y1i = a[offa + 1] - a[offa + 8];
        
x0r = a[offa + 4] - a[offa + 13];
        
x0i = a[offa + 5] + a[offa + 12];
        
y2r = wn4r * (x0r - x0i);
        
y2i = wn4r * (x0i + x0r);
        
x0r = a[offa + 4] + a[offa + 13];
        
x0i = a[offa + 5] - a[offa + 12];
        
y3r = wn4r * (x0r - x0i);
        
y3i = wn4r * (x0i + x0r);
        
x0r = a[offa + 2] - a[offa + 11];
        
x0i = a[offa + 3] + a[offa + 10];
        
y4r = wk1r * x0r - wk1i * x0i;
        
y4i = wk1r * x0i + wk1i * x0r;
        
x0r = a[offa + 2] + a[offa + 11];
        
x0i = a[offa + 3] - a[offa + 10];
        
y5r = wk1i * x0r - wk1r * x0i;
        
y5i = wk1i * x0i + wk1r * x0r;
        
x0r = a[offa + 6] - a[offa + 15];
        
x0i = a[offa + 7] + a[offa + 14];
        
y6r = wk1i * x0r - wk1r * x0i;
        
y6i = wk1i * x0i + wk1r * x0r;
        
x0r = a[offa + 6] + a[offa + 15];
        
x0i = a[offa + 7] - a[offa + 14];
        
y7r = wk1r * x0r - wk1i * x0i;
        
y7i = wk1r * x0i + wk1i * x0r;
        
x0r = y0r + y2r;
        
x0i = y0i + y2i;
        
x1r = y4r + y6r;
        
x1i = y4i + y6i;
        
a[offa] = x0r + x1r;
        
a[offa + 1] = x0i + x1i;
        
a[offa + 2] = x0r - x1r;
        
a[offa + 3] = x0i - x1i;
        
x0r = y0r - y2r;
        
x0i = y0i - y2i;
        
x1r = y4r - y6r;
        
x1i = y4i - y6i;
        
a[offa + 4] = x0r - x1i;
        
a[offa + 5] = x0i + x1r;
        
a[offa + 6] = x0r + x1i;
        
a[offa + 7] = x0i - x1r;
        
x0r = y1r - y3i;
        
x0i = y1i + y3r;
        
x1r = y5r - y7r;
        
x1i = y5i - y7i;
        
a[offa + 8] = x0r + x1r;
        
a[offa + 9] = x0i + x1i;
        
a[offa + 10] = x0r - x1r;
        
a[offa + 11] = x0i - x1i;
        
x0r = y1r + y3i;
        
x0i = y1i - y3r;
        
x1r = y5r + y7r;
        
x1i = y5i + y7i;
        
a[offa + 12] = x0r - x1i;
        
a[offa + 13] = x0i + x1r;
        
a[offa + 14] = x0r + x1i;
        
a[offa + 15] = x0i - x1r;
    
}

    
public static void cftf082(DoubleLargeArray a, long offa, DoubleLargeArray w, long startw)
    
{
        
double wn4r, wk1r, wk1i, x0r, x0i, x1r, x1i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i, y4r, y4i, y5r, y5i, y6r, y6i, y7r, y7i;

        
wn4r = w.getDouble(startw + 1);
        
wk1r = w.getDouble(startw + 2);
        
wk1i = w.getDouble(startw + 3);
        
y0r = a.getDouble(offa) - a.getDouble(offa + 9);
        
y0i = a.getDouble(offa + 1) + a.getDouble(offa + 8);
        
y1r = a.getDouble(offa) + a.getDouble(offa + 9);
        
y1i = a.getDouble(offa + 1) - a.getDouble(offa + 8);
        
x0r = a.getDouble(offa + 4) - a.getDouble(offa + 13);
        
x0i = a.getDouble(offa + 5) + a.getDouble(offa + 12);
        
y2r = wn4r * (x0r - x0i);
        
y2i = wn4r * (x0i + x0r);
        
x0r = a.getDouble(offa + 4) + a.getDouble(offa + 13);
        
x0i = a.getDouble(offa + 5) - a.getDouble(offa + 12);
        
y3r = wn4r * (x0r - x0i);
        
y3i = wn4r * (x0i + x0r);
        
x0r = a.getDouble(offa + 2) - a.getDouble(offa + 11);
        
x0i = a.getDouble(offa + 3) + a.getDouble(offa + 10);
        
y4r = wk1r * x0r - wk1i * x0i;
        
y4i = wk1r * x0i + wk1i * x0r;
        
x0r = a.getDouble(offa + 2) + a.getDouble(offa + 11);
        
x0i = a.getDouble(offa + 3) - a.getDouble(offa + 10);
        
y5r = wk1i * x0r - wk1r * x0i;
        
y5i = wk1i * x0i + wk1r * x0r;
        
x0r = a.getDouble(offa + 6) - a.getDouble(offa + 15);
        
x0i = a.getDouble(offa + 7) + a.getDouble(offa + 14);
        
y6r = wk1i * x0r - wk1r * x0i;
        
y6i = wk1i * x0i + wk1r * x0r;
        
x0r = a.getDouble(offa + 6) + a.getDouble(offa + 15);
        
x0i = a.getDouble(offa + 7) - a.getDouble(offa + 14);
        
y7r = wk1r * x0r - wk1i * x0i;
        
y7i = wk1r * x0i + wk1i * x0r;
        
x0r = y0r + y2r;
        
x0i = y0i + y2i;
        
x1r = y4r + y6r;
        
x1i = y4i + y6i;
        
a.setDouble(offa, x0r + x1r);
        
a.setDouble(offa + 1, x0i + x1i);
        
a.setDouble(offa + 2, x0r - x1r);
        
a.setDouble(offa + 3, x0i - x1i);
        
x0r = y0r - y2r;
        
x0i = y0i - y2i;
        
x1r = y4r - y6r;
        
x1i = y4i - y6i;
        
a.setDouble(offa + 4, x0r - x1i);
        
a.setDouble(offa + 5, x0i + x1r);
        
a.setDouble(offa + 6, x0r + x1i);
        
a.setDouble(offa + 7, x0i - x1r);
        
x0r = y1r - y3i;
        
x0i = y1i + y3r;
        
x1r = y5r - y7r;
        
x1i = y5i - y7i;
        
a.setDouble(offa + 8, x0r + x1r);
        
a.setDouble(offa + 9, x0i + x1i);
        
a.setDouble(offa + 10, x0r - x1r);
        
a.setDouble(offa + 11, x0i - x1i);
        
x0r = y1r + y3i;
        
x0i = y1i - y3r;
        
x1r = y5r + y7r;
        
x1i = y5i + y7i;
        
a.setDouble(offa + 12, x0r - x1i);
        
a.setDouble(offa + 13, x0i + x1r);
        
a.setDouble(offa + 14, x0r + x1i);
        
a.setDouble(offa + 15, x0i - x1r);
    
}

    
public static void cftf040(double[] a, int offa)
    
{
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i;

        
x0r = a[offa] + a[offa + 4];
        
x0i = a[offa + 1] + a[offa + 5];
        
x1r = a[offa] - a[offa + 4];
        
x1i = a[offa + 1] - a[offa + 5];
        
x2r = a[offa + 2] + a[offa + 6];
        
x2i = a[offa + 3] + a[offa + 7];
        
x3r = a[offa + 2] - a[offa + 6];
        
x3i = a[offa + 3] - a[offa + 7];
        
a[offa] = x0r + x2r;
        
a[offa + 1] = x0i + x2i;
        
a[offa + 2] = x1r - x3i;
        
a[offa + 3] = x1i + x3r;
        
a[offa + 4] = x0r - x2r;
        
a[offa + 5] = x0i - x2i;
        
a[offa + 6] = x1r + x3i;
        
a[offa + 7] = x1i - x3r;
    
}

    
public static void cftf040(DoubleLargeArray a, long offa)
    
{
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i;

        
x0r = a.getDouble(offa) + a.getDouble(offa + 4);
        
x0i = a.getDouble(offa + 1) + a.getDouble(offa + 5);
        
x1r = a.getDouble(offa) - a.getDouble(offa + 4);
        
x1i = a.getDouble(offa + 1) - a.getDouble(offa + 5);
        
x2r = a.getDouble(offa + 2) + a.getDouble(offa + 6);
        
x2i = a.getDouble(offa + 3) + a.getDouble(offa + 7);
        
x3r = a.getDouble(offa + 2) - a.getDouble(offa + 6);
        
x3i = a.getDouble(offa + 3) - a.getDouble(offa + 7);
        
a.setDouble(offa, x0r + x2r);
        
a.setDouble(offa + 1, x0i + x2i);
        
a.setDouble(offa + 2, x1r - x3i);
        
a.setDouble(offa + 3, x1i + x3r);
        
a.setDouble(offa + 4, x0r - x2r);
        
a.setDouble(offa + 5, x0i - x2i);
        
a.setDouble(offa + 6, x1r + x3i);
        
a.setDouble(offa + 7, x1i - x3r);
    
}

    
public static void cftb040(double[] a, int offa)
    
{
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i;

        
x0r = a[offa] + a[offa + 4];
        
x0i = a[offa + 1] + a[offa + 5];
        
x1r = a[offa] - a[offa + 4];
        
x1i = a[offa + 1] - a[offa + 5];
        
x2r = a[offa + 2] + a[offa + 6];
        
x2i = a[offa + 3] + a[offa + 7];
        
x3r = a[offa + 2] - a[offa + 6];
        
x3i = a[offa + 3] - a[offa + 7];
        
a[offa] = x0r + x2r;
        
a[offa + 1] = x0i + x2i;
        
a[offa + 2] = x1r + x3i;
        
a[offa + 3] = x1i - x3r;
        
a[offa + 4] = x0r - x2r;
        
a[offa + 5] = x0i - x2i;
        
a[offa + 6] = x1r - x3i;
        
a[offa + 7] = x1i + x3r;
    
}

    
public static void cftb040(DoubleLargeArray a, long offa)
    
{
        
double x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i;

        
x0r = a.getDouble(offa) + a.getDouble(offa + 4);
        
x0i = a.getDouble(offa + 1) + a.getDouble(offa + 5);
        
x1r = a.getDouble(offa) - a.getDouble(offa + 4);
        
x1i = a.getDouble(offa + 1) - a.getDouble(offa + 5);
        
x2r = a.getDouble(offa + 2) + a.getDouble(offa + 6);
        
x2i = a.getDouble(offa + 3) + a.getDouble(offa + 7);
        
x3r = a.getDouble(offa + 2) - a.getDouble(offa + 6);
        
x3i = a.getDouble(offa + 3) - a.getDouble(offa + 7);
        
a.setDouble(offa, x0r + x2r);
        
a.setDouble(offa + 1, x0i + x2i);
        
a.setDouble(offa + 2, x1r + x3i);
        
a.setDouble(offa + 3, x1i - x3r);
        
a.setDouble(offa + 4, x0r - x2r);
        
a.setDouble(offa + 5, x0i - x2i);
        
a.setDouble(offa + 6, x1r - x3i);
        
a.setDouble(offa + 7, x1i + x3r);
    
}

    
public static void cftx020(double[] a, int offa)
    
{
        
double x0r, x0i;
        
x0r = a[offa] - a[offa + 2];
        
x0i = -a[offa + 1] + a[offa + 3];
        
a[offa] += a[offa + 2];
        
a[offa + 1] += a[offa + 3];
        
a[offa + 2] = x0r;
        
a[offa + 3] = x0i;
    
}

    
public static void cftx020(DoubleLargeArray a, long offa)
    
{
        
double x0r, x0i;
        
x0r = a.getDouble(offa) - a.getDouble(offa + 2);
        
x0i = -a.getDouble(offa + 1) + a.getDouble(offa + 3);
        
a.setDouble(offa, a.getDouble(offa) + a.getDouble(offa + 2));
        
a.setDouble(offa + 1, a.getDouble(offa + 1) + a.getDouble(offa + 3));
        
a.setDouble(offa + 2, x0r);
        
a.setDouble(offa + 3, x0i);
    
}

    
public static void cftxb020(double[] a, int offa)
    
{
        
double x0r, x0i;

        
x0r = a[offa] - a[offa + 2];
        
x0i = a[offa + 1] - a[offa + 3];
        
a[offa] += a[offa + 2];
        
a[offa + 1] += a[offa + 3];
        
a[offa + 2] = x0r;
        
a[offa + 3] = x0i;
    
}

    
public static void cftxb020(DoubleLargeArray a, long offa)
    
{
        
double x0r, x0i;

        
x0r = a.getDouble(offa) - a.getDouble(offa + 2);
        
x0i = a.getDouble(offa + 1) - a.getDouble(offa + 3);
        
a.setDouble(offa, a.getDouble(offa) + a.getDouble(offa + 2));
        
a.setDouble(offa + 1, a.getDouble(offa + 1) + a.getDouble(offa + 3));
        
a.setDouble(offa + 2, x0r);
        
a.setDouble(offa + 3, x0i);
    
}

    
public static void cftxc020(double[] a, int offa)
    
{
        
double x0r, x0i;
        
x0r = a[offa] - a[offa + 2];
        
x0i = a[offa + 1] + a[offa + 3];
        
a[offa] += a[offa + 2];
        
a[offa + 1] -= a[offa + 3];
        
a[offa + 2] = x0r;
        
a[offa + 3] = x0i;
    
}

    
public static void cftxc020(DoubleLargeArray a, long offa)
    
{
        
double x0r, x0i;
        
x0r = a.getDouble(offa) - a.getDouble(offa + 2);
        
x0i = a.getDouble(offa + 1) + a.getDouble(offa + 3);
        
a.setDouble(offa, a.getDouble(offa) + a.getDouble(offa + 2));
        
a.setDouble(offa + 1, a.getDouble(offa + 1) - a.getDouble(offa + 3));
        
a.setDouble(offa + 2, x0r);
        
a.setDouble(offa + 3, x0i);
    
}

    
public static void rftfsub(int n, double[] a, int offa, int nc, double[] c, int startc)
    
{
        
int k, kk, ks, m;
        
double wkr, wki, xr, xi, yr, yi;
        
int idx1, idx2;

        
m = n >> 1;
        
ks = 2 * nc / m;
        
kk = 0;
        
for (int j = 2; j < m; j += 2) {
            
k = n - j;
            
kk += ks;
            
wkr = 0.5 - c[startc + nc - kk];
            
wki = c[startc + kk];
            
idx1 = offa + j;
            
idx2 = offa + k;
            
xr = a[idx1] - a[idx2];
            
xi = a[idx1 + 1] + a[idx2 + 1];
            
yr = wkr * xr - wki * xi;
            
yi = wkr * xi + wki * xr;
            
a[idx1] -= yr;
            
a[idx1 + 1] = yi - a[idx1 + 1];
            
a[idx2] += yr;
            
a[idx2 + 1] = yi - a[idx2 + 1];
        
}
        
a[offa + m + 1] = -a[offa + m + 1];
    
}

    
public static void rftfsub(long n, DoubleLargeArray a, long offa, long nc, DoubleLargeArray c, long startc)
    
{
        
long k, kk, ks, m;
        
double wkr, wki, xr, xi, yr, yi;
        
long idx1, idx2;

        
m = n >> 1l;
        
ks = 2 * nc / m;
        
kk = 0;
        
for (long j = 2; j < m; j += 2) {
            
k = n - j;
            
kk += ks;
            
wkr = 0.5 - c.getDouble(startc + nc - kk);
            
wki = c.getDouble(startc + kk);
            
idx1 = offa + j;
            
idx2 = offa + k;
            
xr = a.getDouble(idx1) - a.getDouble(idx2);
            
xi = a.getDouble(idx1 + 1) + a.getDouble(idx2 + 1);
            
yr = wkr * xr - wki * xi;
            
yi = wkr * xi + wki * xr;
            
a.setDouble(idx1, a.getDouble(idx1) - yr);
            
a.setDouble(idx1 + 1, yi - a.getDouble(idx1 + 1));
            
a.setDouble(idx2, a.getDouble(idx2) + yr);
            
a.setDouble(idx2 + 1, yi - a.getDouble(idx2 + 1));
        
}
        
a.setDouble(offa + m + 1, -a.getDouble(offa + m + 1));
    
}

    
public static void rftbsub(int n, double[] a, int offa, int nc, double[] c, int startc)
    
{
        
int k, kk, ks, m;
        
double wkr, wki, xr, xi, yr, yi;
        
int idx1, idx2;

        
m = n >> 1;
        
ks = 2 * nc / m;
        
kk = 0;
        
for (int j = 2; j < m; j += 2) {
            
k = n - j;
            
kk += ks;
            
wkr = 0.5 - c[startc + nc - kk];
            
wki = c[startc + kk];
            
idx1 = offa + j;
            
idx2 = offa + k;
            
xr = a[idx1] - a[idx2];
            
xi = a[idx1 + 1] + a[idx2 + 1];
            
yr = wkr * xr - wki * xi;
            
yi = wkr * xi + wki * xr;
            
a[idx1] -= yr;
            
a[idx1 + 1] -= yi;
            
a[idx2] += yr;
            
a[idx2 + 1] -= yi;
        
}
    
}

    
public static void rftbsub(long n, DoubleLargeArray a, long offa, long nc, DoubleLargeArray c, long startc)
    
{
        
long k, kk, ks, m;
        
double wkr, wki, xr, xi, yr, yi;
        
long idx1, idx2;

        
m = n >> 1l;
        
ks = 2 * nc / m;
        
kk = 0;
        
for (long j = 2; j < m; j += 2) {
            
k = n - j;
            
kk += ks;
            
wkr = 0.5 - c.getDouble(startc + nc - kk);
            
wki = c.getDouble(startc + kk);
            
idx1 = offa + j;
            
idx2 = offa + k;
            
xr = a.getDouble(idx1) - a.getDouble(idx2);
            
xi = a.getDouble(idx1 + 1) + a.getDouble(idx2 + 1);
            
yr = wkr * xr - wki * xi;
            
yi = wkr * xi + wki * xr;
            
a.setDouble(idx1, a.getDouble(idx1) - yr);
            
a.setDouble(idx1 + 1, a.getDouble(idx1 + 1) - yi);
            
a.setDouble(idx2, a.getDouble(idx2) + yr);
            
a.setDouble(idx2 + 1, a.getDouble(idx2 + 1) - yi);
        
}
    
}

    
public static void dctsub(int n, double[] a, int offa, int nc, double[] c, int startc)
    
{
        
int k, kk, ks, m;
        
double wkr, wki, xr;
        
int idx0, idx1, idx2;

        
m = n >> 1;
        
ks = nc / n;
        
kk = 0;
        
for (int j = 1; j < m; j++) {
            
k = n - j;
            
kk += ks;
            
idx0 = startc + kk;
            
idx1 = offa + j;
            
idx2 = offa + k;
            
wkr = c[idx0] - c[startc + nc - kk];
            
wki = c[idx0] + c[startc + nc - kk];
            
xr = wki * a[idx1] - wkr * a[idx2];
            
a[idx1] = wkr * a[idx1] + wki * a[idx2];
            
a[idx2] = xr;
        
}
        
a[offa + m] *= c[startc];
    
}

    
public static void dctsub(long n, DoubleLargeArray a, long offa, long nc, DoubleLargeArray c, long startc)
    
{
        
long k, kk, ks, m;
        
double wkr, wki, xr;
        
long idx0, idx1, idx2;

        
m = n >> 1l;
        
ks = nc / n;
        
kk = 0;
        
for (long j = 1; j < m; j++) {
            
k = n - j;
            
kk += ks;
            
idx0 = startc + kk;
            
idx1 = offa + j;
            
idx2 = offa + k;
            
wkr = c.getDouble(idx0) - c.getDouble(startc + nc - kk);
            
wki = c.getDouble(idx0) + c.getDouble(startc + nc - kk);
            
xr = wki * a.getDouble(idx1) - wkr * a.getDouble(idx2);
            
a.setDouble(idx1, wkr * a.getDouble(idx1) + wki * a.getDouble(idx2));
            
a.setDouble(idx2, xr);
        
}
        
a.setDouble(offa + m, a.getDouble(offa + m) * c.getDouble(startc));
    
}

    
public static void cftfsub(int n, float[] a, int offa, int[] ip, int nw, float[] w)
    
{
        
if (n > 8) {
            
if (n > 32) {
                
cftf1st(n, a, offa, w, nw - (n >> 2));
                
if ((ConcurrencyUtils.getNumberOfThreads() > 1) && (n >= CommonUtils.getThreadsBeginN_1D_FFT_2Threads())) {
                    
cftrec4_th(n, a, offa, nw, w);
                
} else if (n > 512) {
                    
cftrec4(n, a, offa, nw, w);
                
} else if (n > 128) {
                    
cftleaf(n, 1, a, offa, nw, w);
                
} else {
                    
cftfx41(n, a, offa, nw, w);
                
}
                
bitrv2(n, ip, a, offa);
            
} else if (n == 32) {
                
cftf161(a, offa, w, nw - 8);
                
bitrv216(a, offa);
            
} else {
                
cftf081(a, offa, w, 0);
                
bitrv208(a, offa);
            
}
        
} else if (n == 8) {
            
cftf040(a, offa);
        
} else if (n == 4) {
            
cftxb020(a, offa);
        
}
    
}

    
public static void cftfsub(long n, FloatLargeArray a, long offa, LongLargeArray ip, long nw, FloatLargeArray w)
    
{
        
if (n > 8) {
            
if (n > 32) {
                
cftf1st(n, a, offa, w, nw - (n >> 2l));
                
if ((ConcurrencyUtils.getNumberOfThreads() > 1) && (n >= CommonUtils.getThreadsBeginN_1D_FFT_2Threads())) {
                    
cftrec4_th(n, a, offa, nw, w);
                
} else if (n > 512) {
                    
cftrec4(n, a, offa, nw, w);
                
} else if (n > 128) {
                    
cftleaf(n, 1, a, offa, nw, w);
                
} else {
                    
cftfx41(n, a, offa, nw, w);
                
}
                
bitrv2l(n, ip, a, offa);
            
} else if (n == 32) {
                
cftf161(a, offa, w, nw - 8);
                
bitrv216(a, offa);
            
} else {
                
cftf081(a, offa, w, 0);
                
bitrv208(a, offa);
            
}
        
} else if (n == 8) {
            
cftf040(a, offa);
        
} else if (n == 4) {
            
cftxb020(a, offa);
        
}
    
}

    
public static void cftbsub(int n, float[] a, int offa, int[] ip, int nw, float[] w)
    
{
        
if (n > 8) {
            
if (n > 32) {
                
cftb1st(n, a, offa, w, nw - (n >> 2));
                
if ((ConcurrencyUtils.getNumberOfThreads() > 1) && (n >= CommonUtils.getThreadsBeginN_1D_FFT_2Threads())) {
                    
cftrec4_th(n, a, offa, nw, w);
                
} else if (n > 512) {
                    
cftrec4(n, a, offa, nw, w);
                
} else if (n > 128) {
                    
cftleaf(n, 1, a, offa, nw, w);
                
} else {
                    
cftfx41(n, a, offa, nw, w);
                
}
                
bitrv2conj(n, ip, a, offa);
            
} else if (n == 32) {
                
cftf161(a, offa, w, nw - 8);
                
bitrv216neg(a, offa);
            
} else {
                
cftf081(a, offa, w, 0);
                
bitrv208neg(a, offa);
            
}
        
} else if (n == 8) {
            
cftb040(a, offa);
        
} else if (n == 4) {
            
cftxb020(a, offa);
        
}
    
}

    
public static void cftbsub(long n, FloatLargeArray a, long offa, LongLargeArray ip, long nw, FloatLargeArray w)
    
{
        
if (n > 8) {
            
if (n > 32) {
                
cftb1st(n, a, offa, w, nw - (n >> 2l));
                
if ((ConcurrencyUtils.getNumberOfThreads() > 1) && (n >= CommonUtils.getThreadsBeginN_1D_FFT_2Threads())) {
                    
cftrec4_th(n, a, offa, nw, w);
                
} else if (n > 512) {
                    
cftrec4(n, a, offa, nw, w);
                
} else if (n > 128) {
                    
cftleaf(n, 1, a, offa, nw, w);
                
} else {
                    
cftfx41(n, a, offa, nw, w);
                
}
                
bitrv2conj(n, ip, a, offa);
            
} else if (n == 32) {
                
cftf161(a, offa, w, nw - 8);
                
bitrv216neg(a, offa);
            
} else {
                
cftf081(a, offa, w, 0);
                
bitrv208neg(a, offa);
            
}
        
} else if (n == 8) {
            
cftb040(a, offa);
        
} else if (n == 4) {
            
cftxb020(a, offa);
        
}
    
}

    
public static void bitrv2(int n, int[] ip, float[] a, int offa)
    
{
        
int j1, k1, l, m, nh, nm;
        
float xr, xi, yr, yi;
        
int idx0, idx1, idx2;

        
m = 1;
        
for (l = n >> 2; l > 8; l >>= 2) {
            
m <<= 1;
        
}
        
nh = n >> 1;
        
nm = 4 * m;
        
if (l == 8) {
            
for (int k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (int j = 0; j < k; j++) {
                    
j1 = 4 * j + 2 * ip[m + k];
                    
k1 = idx0 + 2 * ip[m + j];
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                
}
                
k1 = idx0 + 2 * ip[m + k];
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 += nm;
                
k1 += 2 * nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 += nm;
                
k1 -= nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 -= 2;
                
k1 -= nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 += nh + 2;
                
k1 += nh + 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 -= nh - nm;
                
k1 += 2 * nm - 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
            
}
        
} else {
            
for (int k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (int j = 0; j < k; j++) {
                    
j1 = 4 * j + ip[m + k];
                    
k1 = idx0 + ip[m + j];
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                
}
                
k1 = idx0 + ip[m + k];
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
                
j1 += nm;
                
k1 += nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a[idx1];
                
xi = a[idx1 + 1];
                
yr = a[idx2];
                
yi = a[idx2 + 1];
                
a[idx1] = yr;
                
a[idx1 + 1] = yi;
                
a[idx2] = xr;
                
a[idx2 + 1] = xi;
            
}
        
}
    
}

    
public static void bitrv2l(long n, LongLargeArray ip, FloatLargeArray a, long offa)
    
{
        
long j1, k1, l, m, nh, nm;
        
float xr, xi, yr, yi;
        
long idx0, idx1, idx2;

        
m = 1;
        
for (l = n >> 2l; l > 8; l >>= 2l) {
            
m <<= 1l;
        
}
        
nh = n >> 1l;
        
nm = 4 * m;
        
if (l == 8) {
            
for (long k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (long j = 0; j < k; j++) {
                    
j1 = 4 * j + 2 * ip.getLong(m + k);
                    
k1 = idx0 + 2 * ip.getLong(m + j);
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                
}
                
k1 = idx0 + 2 * ip.getLong(m + k);
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getFloat(idx1);
                
xi = a.getFloat(idx1 + 1);
                
yr = a.getFloat(idx2);
                
yi = a.getFloat(idx2 + 1);
                
a.setFloat(idx1, yr);
                
a.setFloat(idx1 + 1, yi);
                
a.setFloat(idx2, xr);
                
a.setFloat(idx2 + 1, xi);
                
j1 += nm;
                
k1 += 2 * nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getFloat(idx1);
                
xi = a.getFloat(idx1 + 1);
                
yr = a.getFloat(idx2);
                
yi = a.getFloat(idx2 + 1);
                
a.setFloat(idx1, yr);
                
a.setFloat(idx1 + 1, yi);
                
a.setFloat(idx2, xr);
                
a.setFloat(idx2 + 1, xi);
                
j1 += nm;
                
k1 -= nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getFloat(idx1);
                
xi = a.getFloat(idx1 + 1);
                
yr = a.getFloat(idx2);
                
yi = a.getFloat(idx2 + 1);
                
a.setFloat(idx1, yr);
                
a.setFloat(idx1 + 1, yi);
                
a.setFloat(idx2, xr);
                
a.setFloat(idx2 + 1, xi);
                
j1 -= 2;
                
k1 -= nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getFloat(idx1);
                
xi = a.getFloat(idx1 + 1);
                
yr = a.getFloat(idx2);
                
yi = a.getFloat(idx2 + 1);
                
a.setFloat(idx1, yr);
                
a.setFloat(idx1 + 1, yi);
                
a.setFloat(idx2, xr);
                
a.setFloat(idx2 + 1, xi);
                
j1 += nh + 2;
                
k1 += nh + 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getFloat(idx1);
                
xi = a.getFloat(idx1 + 1);
                
yr = a.getFloat(idx2);
                
yi = a.getFloat(idx2 + 1);
                
a.setFloat(idx1, yr);
                
a.setFloat(idx1 + 1, yi);
                
a.setFloat(idx2, xr);
                
a.setFloat(idx2 + 1, xi);
                
j1 -= nh - nm;
                
k1 += 2 * nm - 2;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getFloat(idx1);
                
xi = a.getFloat(idx1 + 1);
                
yr = a.getFloat(idx2);
                
yi = a.getFloat(idx2 + 1);
                
a.setFloat(idx1, yr);
                
a.setFloat(idx1 + 1, yi);
                
a.setFloat(idx2, xr);
                
a.setFloat(idx2 + 1, xi);
            
}
        
} else {
            
for (long k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (long j = 0; j < k; j++) {
                    
j1 = 4 * j + ip.getLong(m + k);
                    
k1 = idx0 + ip.getLong(m + j);
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 += nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 -= nh;
                    
k1 -= 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                    
j1 -= nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a.getFloat(idx1);
                    
xi = a.getFloat(idx1 + 1);
                    
yr = a.getFloat(idx2);
                    
yi = a.getFloat(idx2 + 1);
                    
a.setFloat(idx1, yr);
                    
a.setFloat(idx1 + 1, yi);
                    
a.setFloat(idx2, xr);
                    
a.setFloat(idx2 + 1, xi);
                
}
                
k1 = idx0 + ip.getLong(m + k);
                
j1 = k1 + 2;
                
k1 += nh;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getFloat(idx1);
                
xi = a.getFloat(idx1 + 1);
                
yr = a.getFloat(idx2);
                
yi = a.getFloat(idx2 + 1);
                
a.setFloat(idx1, yr);
                
a.setFloat(idx1 + 1, yi);
                
a.setFloat(idx2, xr);
                
a.setFloat(idx2 + 1, xi);
                
j1 += nm;
                
k1 += nm;
                
idx1 = offa + j1;
                
idx2 = offa + k1;
                
xr = a.getFloat(idx1);
                
xi = a.getFloat(idx1 + 1);
                
yr = a.getFloat(idx2);
                
yi = a.getFloat(idx2 + 1);
                
a.setFloat(idx1, yr);
                
a.setFloat(idx1 + 1, yi);
                
a.setFloat(idx2, xr);
                
a.setFloat(idx2 + 1, xi);
            
}
        
}
    
}

    
public static void bitrv2conj(int n, int[] ip, float[] a, int offa)
    
{
        
int j1, k1, l, m, nh, nm;
        
float xr, xi, yr, yi;
        
int idx0, idx1, idx2;

        
m = 1;
        
for (l = n >> 2; l > 8; l >>= 2) {
            
m <<= 1;
        
}
        
nh = n >> 1;
        
nm = 4 * m;
        
if (l == 8) {
            
for (int k = 0; k < m; k++) {
                
idx0 = 4 * k;
                
for (int j = 0; j < k; j++) {
                    
j1 = 4 * j + 2 * ip[m + k];
                    
k1 = idx0 + 2 * ip[m + j];
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nh;
                    
k1 += 2;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 += nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 -= nm;
                    
k1 -= 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += 2;
                    
k1 += nh;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 -= nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr = a[idx2];
                    
yi = -a[idx2 + 1];
                    
a[idx1] = yr;
                    
a[idx1 + 1] = yi;
                    
a[idx2] = xr;
                    
a[idx2 + 1] = xi;
                    
j1 += nm;
                    
k1 += 2 * nm;
                    
idx1 = offa + j1;
                    
idx2 = offa + k1;
                    
xr = a[idx1];
                    
xi = -a[idx1 + 1];
                    
yr =