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/*
* Copyright (c) 1997-1999 Massachusetts Institute of Technology
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* This file was automatically generated --- DO NOT EDIT */
/* Generated on Tue May 18 13:54:34 EDT 1999 */
#include <ports/fftw-int.h>
#include <ports/fftw.h>
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -real2hc 8 */
/*
* This function contains 20 FP additions, 2 FP multiplications,
* (or, 20 additions, 2 multiplications, 0 fused multiply/add),
* 12 stack variables, and 16 memory accesses
*/
static const fftw_real K707106781 = FFTW_KONST(+0.707106781186547524400844362104849039284835938);
/*
* Generator Id's :
* $Id: frc_8.c,v 1.1.1.1 2002-03-29 14:12:59 pj Exp $
* $Id: frc_8.c,v 1.1.1.1 2002-03-29 14:12:59 pj Exp $
* $Id: frc_8.c,v 1.1.1.1 2002-03-29 14:12:59 pj Exp $
*/
void fftw_real2hc_8(const fftw_real *input, fftw_real *real_output, fftw_real *imag_output, int istride, int real_ostride, int imag_ostride)
{
fftw_real tmp3;
fftw_real tmp7;
fftw_real tmp13;
fftw_real tmp19;
fftw_real tmp6;
fftw_real tmp16;
fftw_real tmp10;
fftw_real tmp18;
ASSERT_ALIGNED_DOUBLE();
{
fftw_real tmp1;
fftw_real tmp2;
fftw_real tmp11;
fftw_real tmp12;
ASSERT_ALIGNED_DOUBLE();
tmp1 = input[0];
tmp2 = input[4 * istride];
tmp3 = tmp1 + tmp2;
tmp7 = tmp1 - tmp2;
tmp11 = input[7 * istride];
tmp12 = input[3 * istride];
tmp13 = tmp11 - tmp12;
tmp19 = tmp11 + tmp12;
}
{
fftw_real tmp4;
fftw_real tmp5;
fftw_real tmp8;
fftw_real tmp9;
ASSERT_ALIGNED_DOUBLE();
tmp4 = input[2 * istride];
tmp5 = input[6 * istride];
tmp6 = tmp4 + tmp5;
tmp16 = tmp4 - tmp5;
tmp8 = input[istride];
tmp9 = input[5 * istride];
tmp10 = tmp8 - tmp9;
tmp18 = tmp8 + tmp9;
}
{
fftw_real tmp17;
fftw_real tmp20;
fftw_real tmp14;
fftw_real tmp15;
ASSERT_ALIGNED_DOUBLE();
real_output[2 * real_ostride] = tmp3 - tmp6;
tmp17 = tmp3 + tmp6;
tmp20 = tmp18 + tmp19;
real_output[4 * real_ostride] = tmp17 - tmp20;
real_output[0] = tmp17 + tmp20;
imag_output[2 * imag_ostride] = tmp19 - tmp18;
tmp14 = K707106781 * (tmp10 + tmp13);
real_output[3 * real_ostride] = tmp7 - tmp14;
real_output[real_ostride] = tmp7 + tmp14;
tmp15 = K707106781 * (tmp13 - tmp10);
imag_output[imag_ostride] = tmp15 - tmp16;
imag_output[3 * imag_ostride] = tmp16 + tmp15;
}
}
fftw_codelet_desc fftw_real2hc_8_desc =
{
"fftw_real2hc_8",
(void (*)()) fftw_real2hc_8,
8,
FFTW_FORWARD,
FFTW_REAL2HC,
178,
0,
(const int *) 0,
};