/*
* 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 20:44:27 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 16 */
/*
* This function contains 58 FP additions, 18 FP multiplications,
* (or, 54 additions, 14 multiplications, 4 fused multiply/add),
* 26 stack variables, and 32 memory accesses
*/
static const fftw_real K765366864 = FFTW_KONST(+0.765366864730179543456919968060797733522689125);
static const fftw_real K1_847759065 = FFTW_KONST(+1.847759065022573512256366378793576573644833252);
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_16.c,v 1.1.1.1 2006/05/12 15:14:46 veplaini Exp $
* $Id: fcr_16.c,v 1.1.1.1 2006/05/12 15:14:46 veplaini Exp $
* $Id: fcr_16.c,v 1.1.1.1 2006/05/12 15:14:46 veplaini Exp $
*/
void fftw_hc2real_16(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 tmp54;
fftw_real tmp42;
fftw_real tmp21;
fftw_real tmp6;
fftw_real tmp18;
fftw_real tmp39;
fftw_real tmp53;
fftw_real tmp13;
fftw_real tmp29;
fftw_real tmp16;
fftw_real tmp26;
fftw_real tmp23;
fftw_real tmp49;
fftw_real tmp57;
fftw_real tmp56;
fftw_real tmp46;
fftw_real tmp30;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp7;
fftw_real tmp8;
fftw_real tmp40;
fftw_real tmp19;
fftw_real tmp20;
fftw_real tmp41;
ASSERT_ALIGNED_DOUBLE;
tmp7 = real_input[2 * real_istride];
tmp8 = real_input[6 * real_istride];
tmp40 = tmp7 - tmp8;
tmp19 = imag_input[2 * imag_istride];
tmp20 = imag_input[6 * imag_istride];
tmp41 = tmp20 + tmp19;
tmp9 = K2_000000000 * (tmp7 + tmp8);
tmp54 = K1_414213562 * (tmp40 + tmp41);
tmp42 = K1_414213562 * (tmp40 - tmp41);
tmp21 = K2_000000000 * (tmp19 - tmp20);
}
{
fftw_real tmp5;
fftw_real tmp38;
fftw_real tmp3;
fftw_real tmp36;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp4;
fftw_real tmp37;
fftw_real tmp1;
fftw_real tmp2;
ASSERT_ALIGNED_DOUBLE;
tmp4 = real_input[4 * real_istride];
tmp5 = K2_000000000 * tmp4;
tmp37 = imag_input[4 * imag_istride];
tmp38 = K2_000000000 * tmp37;
tmp1 = real_input[0];
tmp2 = real_input[8 * real_istride];
tmp3 = tmp1 + tmp2;
tmp36 = tmp1 - tmp2;
}
tmp6 = tmp3 + tmp5;
tmp18 = tmp3 - tmp5;
tmp39 = tmp36 - tmp38;
tmp53 = tmp36 + tmp38;
}
{
fftw_real tmp44;
fftw_real tmp48;
fftw_real tmp47;
fftw_real tmp45;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp11;
fftw_real tmp12;
fftw_real tmp27;
fftw_real tmp28;
ASSERT_ALIGNED_DOUBLE;
tmp11 = real_input[real_istride];
tmp12 = real_input[7 * real_istride];
tmp13 = tmp11 + tmp12;
tmp44 = tmp11 - tmp12;
tmp27 = imag_input[imag_istride];
tmp28 = imag_input[7 * imag_istride];
tmp29 = tmp27 - tmp28;
tmp48 = tmp27 + tmp28;
}
{
fftw_real tmp14;
fftw_real tmp15;
fftw_real tmp24;
fftw_real tmp25;
ASSERT_ALIGNED_DOUBLE;
tmp14 = real_input[3 * real_istride];
tmp15 = real_input[5 * real_istride];
tmp16 = tmp14 + tmp15;
tmp47 = tmp15 - tmp14;
tmp24 = imag_input[3 * imag_istride];
tmp25 = imag_input[5 * imag_istride];
tmp26 = tmp24 - tmp25;
tmp45 = tmp25 + tmp24;
}
tmp23 = tmp13 - tmp16;
tmp49 = tmp47 + tmp48;
tmp57 = tmp48 - tmp47;
tmp56 = tmp44 + tmp45;
tmp46 = tmp44 - tmp45;
tmp30 = tmp26 + tmp29;
}
{
fftw_real tmp10;
fftw_real tmp17;
fftw_real tmp34;
fftw_real tmp35;
ASSERT_ALIGNED_DOUBLE;
tmp10 = tmp6 + tmp9;
tmp17 = K2_000000000 * (tmp13 + tmp16);
output[8 * ostride] = tmp10 - tmp17;
output[0] = tmp10 + tmp17;
tmp34 = tmp6 - tmp9;
tmp35 = K2_000000000 * (tmp29 - tmp26);
output[4 * ostride] = tmp34 - tmp35;
output[12 * ostride] = tmp34 + tmp35;
}
{
fftw_real tmp22;
fftw_real tmp31;
fftw_real tmp32;
fftw_real tmp33;
ASSERT_ALIGNED_DOUBLE;
tmp22 = tmp18 - tmp21;
tmp31 = K1_414213562 * (tmp23 - tmp30);
output[10 * ostride] = tmp22 - tmp31;
output[2 * ostride] = tmp22 + tmp31;
tmp32 = tmp18 + tmp21;
tmp33 = K1_414213562 * (tmp23 + tmp30);
output[6 * ostride] = tmp32 - tmp33;
output[14 * ostride] = tmp32 + tmp33;
}
{
fftw_real tmp43;
fftw_real tmp50;
fftw_real tmp51;
fftw_real tmp52;
ASSERT_ALIGNED_DOUBLE;
tmp43 = tmp39 + tmp42;
tmp50 = (K1_847759065 * tmp46) - (K765366864 * tmp49);
output[9 * ostride] = tmp43 - tmp50;
output[ostride] = tmp43 + tmp50;
tmp51 = tmp39 - tmp42;
tmp52 = (K765366864 * tmp46) + (K1_847759065 * tmp49);
output[5 * ostride] = tmp51 - tmp52;
output[13 * ostride] = tmp51 + tmp52;
}
{
fftw_real tmp55;
fftw_real tmp58;
fftw_real tmp59;
fftw_real tmp60;
ASSERT_ALIGNED_DOUBLE;
tmp55 = tmp53 - tmp54;
tmp58 = (K765366864 * tmp56) - (K1_847759065 * tmp57);
output[11 * ostride] = tmp55 - tmp58;
output[3 * ostride] = tmp55 + tmp58;
tmp59 = tmp53 + tmp54;
tmp60 = (K1_847759065 * tmp56) + (K765366864 * tmp57);
output[7 * ostride] = tmp59 - tmp60;
output[15 * ostride] = tmp59 + tmp60;
}
}
fftw_codelet_desc fftw_hc2real_16_desc =
{
"fftw_hc2real_16",
(void (*)()) fftw_hc2real_16,
16,
FFTW_BACKWARD,
FFTW_HC2REAL,
367,
0,
(const int *) 0,
};