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/*
* Copyright (c) 1997-1999, 2003 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 Mon Mar 24 02:06:57 EST 2003 */
#include "fftw-int.h"
#include "fftw.h"
/* Generated by: /homee/stevenj/cvs/fftw/gensrc/genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -hc2real 7 */
/*
* This function contains 24 FP additions, 19 FP multiplications,
* (or, 23 additions, 18 multiplications, 1 fused multiply/add),
* 13 stack variables, and 14 memory accesses
*/
static const fftw_real K2_000000000 =
FFTW_KONST(+2.000000000000000000000000000000000000000000000);
static const fftw_real K1_801937735 =
FFTW_KONST(+1.801937735804838252472204639014890102331838324);
static const fftw_real K445041867 =
FFTW_KONST(+0.445041867912628808577805128993589518932711138);
static const fftw_real K1_246979603 =
FFTW_KONST(+1.246979603717467061050009768008479621264549462);
static const fftw_real K867767478 =
FFTW_KONST(+0.867767478235116240951536665696717509219981456);
static const fftw_real K1_949855824 =
FFTW_KONST(+1.949855824363647214036263365987862434465571601);
static const fftw_real K1_563662964 =
FFTW_KONST(+1.563662964936059617416889053348115500464669037);
/*
* Generator Id's :
* $Id: exprdag.ml,v 1.43 2003/03/16 23:43:46 stevenj Exp $
* $Id: fft.ml,v 1.44 2003/03/16 23:43:46 stevenj Exp $
* $Id: to_c.ml,v 1.26 2003/03/16 23:43:46 stevenj Exp $
*/
void fftw_hc2real_7(const fftw_real *real_input,
const fftw_real *imag_input, fftw_real *output,
int real_istride, int imag_istride, int ostride)
{
fftw_real tmp9;
fftw_real tmp13;
fftw_real tmp11;
fftw_real tmp1;
fftw_real tmp4;
fftw_real tmp2;
fftw_real tmp3;
fftw_real tmp5;
fftw_real tmp12;
fftw_real tmp10;
fftw_real tmp6;
fftw_real tmp8;
fftw_real tmp7;
ASSERT_ALIGNED_DOUBLE;
tmp6 = imag_input[2 * imag_istride];
tmp8 = imag_input[imag_istride];
tmp7 = imag_input[3 * imag_istride];
tmp9 =
(K1_563662964 * tmp6) - (K1_949855824 * tmp7) -
(K867767478 * tmp8);
tmp13 =
(K867767478 * tmp6) + (K1_563662964 * tmp7) -
(K1_949855824 * tmp8);
tmp11 =
(K1_563662964 * tmp8) + (K1_949855824 * tmp6) +
(K867767478 * tmp7);
tmp1 = real_input[0];
tmp4 = real_input[3 * real_istride];
tmp2 = real_input[real_istride];
tmp3 = real_input[2 * real_istride];
tmp5 =
tmp1 + (K1_246979603 * tmp3) - (K445041867 * tmp4) -
(K1_801937735 * tmp2);
tmp12 =
tmp1 + (K1_246979603 * tmp4) - (K1_801937735 * tmp3) -
(K445041867 * tmp2);
tmp10 =
tmp1 + (K1_246979603 * tmp2) - (K1_801937735 * tmp4) -
(K445041867 * tmp3);
output[4 * ostride] = tmp5 - tmp9;
output[3 * ostride] = tmp5 + tmp9;
output[0] = tmp1 + (K2_000000000 * (tmp2 + tmp3 + tmp4));
output[2 * ostride] = tmp12 + tmp13;
output[5 * ostride] = tmp12 - tmp13;
output[6 * ostride] = tmp10 + tmp11;
output[ostride] = tmp10 - tmp11;
}
fftw_codelet_desc fftw_hc2real_7_desc = {
"fftw_hc2real_7",
(void (*)()) fftw_hc2real_7,
7,
FFTW_BACKWARD,
FFTW_HC2REAL,
169,
0,
(const int *) 0,
};
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