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/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) 2008 - INRIA - Allan SIMON
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
*
*/
#include "fft_internal.h"
/*
** radix 2 iteration subroutine
*/
void r2tx(int nthpo, doubleComplex* c0, doubleComplex* c1)
{
int kk;
/* double *cr0, *ci0, *cr1, *ci1, r1, fi1;*/
doubleComplex temp ;
/* cr0 = &(c0[0].re);
ci0 = &(c0[0].im);
cr1 = &(c1[0].re);
ci1 = &(c1[0].im);*/
for(kk=0;kk<nthpo;kk+=2)
{
temp = zadds ( c0[kk] , c1[kk] );
c1[kk] = zdiffs( c0[kk] , c1[kk] );
c0[kk] = DoubleComplex ( zreals ( temp ) , zimags( temp ));
/*
r1 = cr0[kk] + cr1[kk];
cr1[kk] = cr0[kk] - cr1[kk];
cr0[kk] = r1;
fi1 = ci0[kk] + ci1[kk];
ci1[kk] = ci0[kk] - ci1[kk];
ci0[kk] = fi1;
*/
}
}
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