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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 Sun Nov 7 20:44:19 EST 1999 */
#include <fftw-int.h>
#include <fftw.h>
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -hc2real 5 */
/*
* This function contains 12 FP additions, 7 FP multiplications,
* (or, 8 additions, 3 multiplications, 4 fused multiply/add),
* 12 stack variables, and 10 memory accesses
*/
static const fftw_real K2_000000000 = FFTW_KONST(+2.000000000000000000000000000000000000000000000);
static const fftw_real K1_118033988 = FFTW_KONST(+1.118033988749894848204586834365638117720309180);
static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000);
static const fftw_real K1_902113032 = FFTW_KONST(+1.902113032590307144232878666758764286811397268);
static const fftw_real K1_175570504 = FFTW_KONST(+1.175570504584946258337411909278145537195304875);
/*
* Generator Id's :
* $Id: fcr_5.c,v 1.1.1.1 2006/05/12 15:14:50 veplaini Exp $
* $Id: fcr_5.c,v 1.1.1.1 2006/05/12 15:14:50 veplaini Exp $
* $Id: fcr_5.c,v 1.1.1.1 2006/05/12 15:14:50 veplaini Exp $
*/
void fftw_hc2real_5(const fftw_real *real_input, const fftw_real *imag_input, fftw_real *output, int real_istride, int imag_istride, int ostride)
{
fftw_real tmp10;
fftw_real tmp12;
fftw_real tmp1;
fftw_real tmp4;
fftw_real tmp5;
fftw_real tmp6;
fftw_real tmp11;
fftw_real tmp7;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp8;
fftw_real tmp9;
fftw_real tmp2;
fftw_real tmp3;
ASSERT_ALIGNED_DOUBLE;
tmp8 = imag_input[imag_istride];
tmp9 = imag_input[2 * imag_istride];
tmp10 = (K1_175570504 * tmp8) - (K1_902113032 * tmp9);
tmp12 = (K1_902113032 * tmp8) + (K1_175570504 * tmp9);
tmp1 = real_input[0];
tmp2 = real_input[real_istride];
tmp3 = real_input[2 * real_istride];
tmp4 = tmp2 + tmp3;
tmp5 = tmp1 - (K500000000 * tmp4);
tmp6 = K1_118033988 * (tmp2 - tmp3);
}
output[0] = tmp1 + (K2_000000000 * tmp4);
tmp11 = tmp6 + tmp5;
output[ostride] = tmp11 - tmp12;
output[4 * ostride] = tmp11 + tmp12;
tmp7 = tmp5 - tmp6;
output[2 * ostride] = tmp7 - tmp10;
output[3 * ostride] = tmp7 + tmp10;
}
fftw_codelet_desc fftw_hc2real_5_desc =
{
"fftw_hc2real_5",
(void (*)()) fftw_hc2real_5,
5,
FFTW_BACKWARD,
FFTW_HC2REAL,
125,
0,
(const int *) 0,
};
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