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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 20:44:20 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 8 */
/*
* This function contains 20 FP additions, 6 FP multiplications,
* (or, 20 additions, 6 multiplications, 0 fused multiply/add),
* 18 stack variables, and 16 memory accesses
*/
static const fftw_real K1_414213562 = FFTW_KONST(+1.414213562373095048801688724209698078569671875);
static const fftw_real K2_000000000 = FFTW_KONST(+2.000000000000000000000000000000000000000000000);
/*
* Generator Id's :
* $Id: fcr_8.c,v 1.1.1.1 2006/05/12 15:14:56 veplaini Exp $
* $Id: fcr_8.c,v 1.1.1.1 2006/05/12 15:14:56 veplaini Exp $
* $Id: fcr_8.c,v 1.1.1.1 2006/05/12 15:14:56 veplaini Exp $
*/
void fftw_hc2real_8(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 tmp12;
fftw_real tmp3;
fftw_real tmp10;
fftw_real tmp9;
fftw_real tmp14;
fftw_real tmp17;
fftw_real tmp22;
fftw_real tmp6;
fftw_real tmp21;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp4;
fftw_real tmp11;
fftw_real tmp1;
fftw_real tmp2;
ASSERT_ALIGNED_DOUBLE;
tmp4 = real_input[2 * real_istride];
tmp5 = K2_000000000 * tmp4;
tmp11 = imag_input[2 * imag_istride];
tmp12 = K2_000000000 * tmp11;
tmp1 = real_input[0];
tmp2 = real_input[4 * real_istride];
tmp3 = tmp1 + tmp2;
tmp10 = tmp1 - tmp2;
{
fftw_real tmp7;
fftw_real tmp8;
fftw_real tmp15;
fftw_real tmp16;
ASSERT_ALIGNED_DOUBLE;
tmp7 = real_input[real_istride];
tmp8 = real_input[3 * real_istride];
tmp9 = K2_000000000 * (tmp7 + tmp8);
tmp14 = tmp7 - tmp8;
tmp15 = imag_input[3 * imag_istride];
tmp16 = imag_input[imag_istride];
tmp17 = tmp15 + tmp16;
tmp22 = K2_000000000 * (tmp16 - tmp15);
}
}
tmp6 = tmp3 + tmp5;
output[4 * ostride] = tmp6 - tmp9;
output[0] = tmp6 + tmp9;
tmp21 = tmp3 - tmp5;
output[2 * ostride] = tmp21 - tmp22;
output[6 * ostride] = tmp21 + tmp22;
{
fftw_real tmp13;
fftw_real tmp18;
fftw_real tmp19;
fftw_real tmp20;
ASSERT_ALIGNED_DOUBLE;
tmp13 = tmp10 - tmp12;
tmp18 = K1_414213562 * (tmp14 - tmp17);
output[5 * ostride] = tmp13 - tmp18;
output[ostride] = tmp13 + tmp18;
tmp19 = tmp10 + tmp12;
tmp20 = K1_414213562 * (tmp14 + tmp17);
output[3 * ostride] = tmp19 - tmp20;
output[7 * ostride] = tmp19 + tmp20;
}
}
fftw_codelet_desc fftw_hc2real_8_desc =
{
"fftw_hc2real_8",
(void (*)()) fftw_hc2real_8,
8,
FFTW_BACKWARD,
FFTW_HC2REAL,
191,
0,
(const int *) 0,
};
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