/*
* 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 20:45:11 EST 1999 */
#include <fftw-int.h>
#include <fftw.h>
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -hc2hc-backward 7 */
/*
* This function contains 120 FP additions, 98 FP multiplications,
* (or, 106 additions, 84 multiplications, 14 fused multiply/add),
* 32 stack variables, and 56 memory accesses
*/
static const fftw_real K222520933 = FFTW_KONST(+0.222520933956314404288902564496794759466355569);
static const fftw_real K900968867 = FFTW_KONST(+0.900968867902419126236102319507445051165919162);
static const fftw_real K623489801 = FFTW_KONST(+0.623489801858733530525004884004239810632274731);
static const fftw_real K781831482 = FFTW_KONST(+0.781831482468029808708444526674057750232334519);
static const fftw_real K974927912 = FFTW_KONST(+0.974927912181823607018131682993931217232785801);
static const fftw_real K433883739 = FFTW_KONST(+0.433883739117558120475768332848358754609990728);
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: fhb_7.c,v 1.1.1.1 2006/05/12 15:14:57 veplaini Exp $
* $Id: fhb_7.c,v 1.1.1.1 2006/05/12 15:14:57 veplaini Exp $
* $Id: fhb_7.c,v 1.1.1.1 2006/05/12 15:14:57 veplaini Exp $
*/
void fftw_hc2hc_backward_7(fftw_real *A, const fftw_complex *W, int iostride, int m, int dist)
{
int i;
fftw_real *X;
fftw_real *Y;
X = A;
Y = A + (7 * iostride);
{
fftw_real tmp84;
fftw_real tmp88;
fftw_real tmp86;
fftw_real tmp76;
fftw_real tmp79;
fftw_real tmp77;
fftw_real tmp78;
fftw_real tmp80;
fftw_real tmp87;
fftw_real tmp85;
fftw_real tmp81;
fftw_real tmp83;
fftw_real tmp82;
ASSERT_ALIGNED_DOUBLE;
tmp81 = Y[-2 * iostride];
tmp83 = Y[-iostride];
tmp82 = Y[-3 * iostride];
tmp84 = (K1_563662964 * tmp81) - (K1_949855824 * tmp82) - (K867767478 * tmp83);
tmp88 = (K867767478 * tmp81) + (K1_563662964 * tmp82) - (K1_949855824 * tmp83);
tmp86 = (K1_563662964 * tmp83) + (K1_949855824 * tmp81) + (K867767478 * tmp82);
tmp76 = X[0];
tmp79 = X[3 * iostride];
tmp77 = X[iostride];
tmp78 = X[2 * iostride];
tmp80 = tmp76 + (K1_246979603 * tmp78) - (K445041867 * tmp79) - (K1_801937735 * tmp77);
tmp87 = tmp76 + (K1_246979603 * tmp79) - (K1_801937735 * tmp78) - (K445041867 * tmp77);
tmp85 = tmp76 + (K1_246979603 * tmp77) - (K1_801937735 * tmp79) - (K445041867 * tmp78);
X[4 * iostride] = tmp80 - tmp84;
X[3 * iostride] = tmp80 + tmp84;
X[0] = tmp76 + (K2_000000000 * (tmp77 + tmp78 + tmp79));
X[2 * iostride] = tmp87 + tmp88;
X[5 * iostride] = tmp87 - tmp88;
X[iostride] = tmp85 - tmp86;
X[6 * iostride] = tmp85 + tmp86;
}
X = X + dist;
Y = Y - dist;
for (i = 2; i < m; i = i + 2, X = X + dist, Y = Y - dist, W = W + 6) {
fftw_real tmp14;
fftw_real tmp23;
fftw_real tmp17;
fftw_real tmp20;
fftw_real tmp39;
fftw_real tmp53;
fftw_real tmp66;
fftw_real tmp69;
fftw_real tmp57;
fftw_real tmp42;
fftw_real tmp24;
fftw_real tmp33;
fftw_real tmp27;
fftw_real tmp30;
fftw_real tmp46;
fftw_real tmp58;
fftw_real tmp70;
fftw_real tmp65;
fftw_real tmp54;
fftw_real tmp35;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp37;
fftw_real tmp36;
fftw_real tmp38;
fftw_real tmp21;
fftw_real tmp22;
ASSERT_ALIGNED_DOUBLE;
tmp14 = X[0];
tmp21 = X[3 * iostride];
tmp22 = Y[-4 * iostride];
tmp23 = tmp21 + tmp22;
tmp37 = tmp21 - tmp22;
{
fftw_real tmp15;
fftw_real tmp16;
fftw_real tmp18;
fftw_real tmp19;
ASSERT_ALIGNED_DOUBLE;
tmp15 = X[iostride];
tmp16 = Y[-6 * iostride];
tmp17 = tmp15 + tmp16;
tmp36 = tmp15 - tmp16;
tmp18 = X[2 * iostride];
tmp19 = Y[-5 * iostride];
tmp20 = tmp18 + tmp19;
tmp38 = tmp18 - tmp19;
}
tmp39 = (K433883739 * tmp36) + (K974927912 * tmp37) - (K781831482 * tmp38);
tmp53 = (K781831482 * tmp36) + (K974927912 * tmp38) + (K433883739 * tmp37);
tmp66 = (K974927912 * tmp36) - (K781831482 * tmp37) - (K433883739 * tmp38);
tmp69 = tmp14 + (K623489801 * tmp23) - (K900968867 * tmp20) - (K222520933 * tmp17);
tmp57 = tmp14 + (K623489801 * tmp17) - (K900968867 * tmp23) - (K222520933 * tmp20);
tmp42 = tmp14 + (K623489801 * tmp20) - (K222520933 * tmp23) - (K900968867 * tmp17);
}
{
fftw_real tmp44;
fftw_real tmp45;
fftw_real tmp43;
fftw_real tmp31;
fftw_real tmp32;
ASSERT_ALIGNED_DOUBLE;
tmp24 = Y[0];
tmp31 = Y[-3 * iostride];
tmp32 = X[4 * iostride];
tmp33 = tmp31 - tmp32;
tmp44 = tmp31 + tmp32;
{
fftw_real tmp25;
fftw_real tmp26;
fftw_real tmp28;
fftw_real tmp29;
ASSERT_ALIGNED_DOUBLE;
tmp25 = Y[-iostride];
tmp26 = X[6 * iostride];
tmp27 = tmp25 - tmp26;
tmp45 = tmp25 + tmp26;
tmp28 = Y[-2 * iostride];
tmp29 = X[5 * iostride];
tmp30 = tmp28 - tmp29;
tmp43 = tmp28 + tmp29;
}
tmp46 = (K781831482 * tmp43) - (K974927912 * tmp44) - (K433883739 * tmp45);
tmp58 = (K781831482 * tmp45) + (K974927912 * tmp43) + (K433883739 * tmp44);
tmp70 = (K433883739 * tmp43) + (K781831482 * tmp44) - (K974927912 * tmp45);
tmp65 = tmp24 + (K623489801 * tmp33) - (K900968867 * tmp30) - (K222520933 * tmp27);
tmp54 = tmp24 + (K623489801 * tmp27) - (K900968867 * tmp33) - (K222520933 * tmp30);
tmp35 = tmp24 + (K623489801 * tmp30) - (K222520933 * tmp33) - (K900968867 * tmp27);
}
X[0] = tmp14 + tmp17 + tmp20 + tmp23;
{
fftw_real tmp61;
fftw_real tmp63;
fftw_real tmp60;
fftw_real tmp62;
ASSERT_ALIGNED_DOUBLE;
tmp61 = tmp54 - tmp53;
tmp63 = tmp57 + tmp58;
tmp60 = c_re(W[5]);
tmp62 = c_im(W[5]);
Y[0] = (tmp60 * tmp61) - (tmp62 * tmp63);
X[6 * iostride] = (tmp62 * tmp61) + (tmp60 * tmp63);
}
{
fftw_real tmp73;
fftw_real tmp75;
fftw_real tmp72;
fftw_real tmp74;
ASSERT_ALIGNED_DOUBLE;
tmp73 = tmp66 + tmp65;
tmp75 = tmp69 + tmp70;
tmp72 = c_re(W[1]);
tmp74 = c_im(W[1]);
Y[-4 * iostride] = (tmp72 * tmp73) - (tmp74 * tmp75);
X[2 * iostride] = (tmp74 * tmp73) + (tmp72 * tmp75);
}
{
fftw_real tmp67;
fftw_real tmp71;
fftw_real tmp64;
fftw_real tmp68;
ASSERT_ALIGNED_DOUBLE;
tmp67 = tmp65 - tmp66;
tmp71 = tmp69 - tmp70;
tmp64 = c_re(W[4]);
tmp68 = c_im(W[4]);
Y[-iostride] = (tmp64 * tmp67) - (tmp68 * tmp71);
X[5 * iostride] = (tmp68 * tmp67) + (tmp64 * tmp71);
}
Y[-6 * iostride] = tmp24 + tmp27 + tmp30 + tmp33;
{
fftw_real tmp40;
fftw_real tmp47;
fftw_real tmp34;
fftw_real tmp41;
ASSERT_ALIGNED_DOUBLE;
tmp40 = tmp35 - tmp39;
tmp47 = tmp42 - tmp46;
tmp34 = c_re(W[3]);
tmp41 = c_im(W[3]);
Y[-2 * iostride] = (tmp34 * tmp40) - (tmp41 * tmp47);
X[4 * iostride] = (tmp41 * tmp40) + (tmp34 * tmp47);
}
{
fftw_real tmp49;
fftw_real tmp51;
fftw_real tmp48;
fftw_real tmp50;
ASSERT_ALIGNED_DOUBLE;
tmp49 = tmp39 + tmp35;
tmp51 = tmp42 + tmp46;
tmp48 = c_re(W[2]);
tmp50 = c_im(W[2]);
Y[-3 * iostride] = (tmp48 * tmp49) - (tmp50 * tmp51);
X[3 * iostride] = (tmp50 * tmp49) + (tmp48 * tmp51);
}
{
fftw_real tmp55;
fftw_real tmp59;
fftw_real tmp52;
fftw_real tmp56;
ASSERT_ALIGNED_DOUBLE;
tmp55 = tmp53 + tmp54;
tmp59 = tmp57 - tmp58;
tmp52 = c_re(W[0]);
tmp56 = c_im(W[0]);
Y[-5 * iostride] = (tmp52 * tmp55) - (tmp56 * tmp59);
X[iostride] = (tmp56 * tmp55) + (tmp52 * tmp59);
}
}
if (i == m) {
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 = Y[-2 * iostride];
tmp8 = Y[0];
tmp7 = Y[-iostride];
tmp9 = (K1_563662964 * tmp6) + (K1_949855824 * tmp7) + (K867767478 * tmp8);
tmp13 = (K1_563662964 * tmp7) - (K1_949855824 * tmp8) - (K867767478 * tmp6);
tmp11 = (K1_949855824 * tmp6) - (K1_563662964 * tmp8) - (K867767478 * tmp7);
tmp1 = X[3 * iostride];
tmp4 = X[0];
tmp2 = X[2 * iostride];
tmp3 = X[iostride];
tmp5 = (K445041867 * tmp3) + (K1_801937735 * tmp4) - (K1_246979603 * tmp2) - tmp1;
tmp12 = (K1_801937735 * tmp2) + (K445041867 * tmp4) - (K1_246979603 * tmp3) - tmp1;
tmp10 = tmp1 + (K1_246979603 * tmp4) - (K1_801937735 * tmp3) - (K445041867 * tmp2);
X[iostride] = tmp5 - tmp9;
X[6 * iostride] = -(tmp5 + tmp9);
X[0] = tmp1 + (K2_000000000 * (tmp2 + tmp3 + tmp4));
X[4 * iostride] = tmp13 - tmp12;
X[3 * iostride] = tmp12 + tmp13;
X[5 * iostride] = tmp11 - tmp10;
X[2 * iostride] = tmp10 + tmp11;
}
}
static const int twiddle_order[] =
{1, 2, 3, 4, 5, 6};
fftw_codelet_desc fftw_hc2hc_backward_7_desc =
{
"fftw_hc2hc_backward_7",
(void (*)()) fftw_hc2hc_backward_7,
7,
FFTW_BACKWARD,
FFTW_HC2HC,
168,
6,
twiddle_order,
};