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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 02:06:56 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 3 */
/*
* This function contains 4 FP additions, 2 FP multiplications,
* (or, 3 additions, 1 multiplications, 1 fused multiply/add),
* 5 stack variables, and 6 memory accesses
*/
static const fftw_real K2_000000000 =
FFTW_KONST(+2.000000000000000000000000000000000000000000000);
static const fftw_real K1_732050807 =
FFTW_KONST(+1.732050807568877293527446341505872366942805254);
/*
* 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_3(const fftw_real *real_input,
const fftw_real *imag_input, fftw_real *output,
int real_istride, int imag_istride, int ostride)
{
fftw_real tmp5;
fftw_real tmp1;
fftw_real tmp2;
fftw_real tmp3;
fftw_real tmp4;
ASSERT_ALIGNED_DOUBLE;
tmp4 = imag_input[imag_istride];
tmp5 = K1_732050807 * tmp4;
tmp1 = real_input[0];
tmp2 = real_input[real_istride];
tmp3 = tmp1 - tmp2;
output[0] = tmp1 + (K2_000000000 * tmp2);
output[2 * ostride] = tmp3 + tmp5;
output[ostride] = tmp3 - tmp5;
}
fftw_codelet_desc fftw_hc2real_3_desc = {
"fftw_hc2real_3",
(void (*)()) fftw_hc2real_3,
3,
FFTW_BACKWARD,
FFTW_HC2REAL,
81,
0,
(const int *) 0,
};
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