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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 Tue May 18 13:56:04 EDT 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 8 */
/*
* This function contains 108 FP additions, 50 FP multiplications,
* (or, 90 additions, 32 multiplications, 18 fused multiply/add),
* 31 stack variables, and 64 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 K707106781 = FFTW_KONST(+0.707106781186547524400844362104849039284835938);
static const fftw_real K1_414213562 = FFTW_KONST(+1.414213562373095048801688724209698078569671875);
static const fftw_real K2_000000000 = FFTW_KONST(+2.000000000000000000000000000000000000000000000);
/*
* Generator Id's :
* $Id: fhb_8.c,v 1.2 2003-03-24 11:14:57 pj Exp $
* $Id: fhb_8.c,v 1.2 2003-03-24 11:14:57 pj Exp $
* $Id: fhb_8.c,v 1.2 2003-03-24 11:14:57 pj Exp $
*/
void fftw_hc2hc_backward_8(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 + (8 * iostride);
{
fftw_real tmp107;
fftw_real tmp118;
fftw_real tmp105;
fftw_real tmp116;
fftw_real tmp111;
fftw_real tmp120;
fftw_real tmp115;
fftw_real tmp121;
fftw_real tmp108;
fftw_real tmp112;
ASSERT_ALIGNED_DOUBLE();
{
fftw_real tmp106;
fftw_real tmp117;
fftw_real tmp103;
fftw_real tmp104;
ASSERT_ALIGNED_DOUBLE();
tmp106 = X[2 * iostride];
tmp107 = K2_000000000 * tmp106;
tmp117 = Y[-2 * iostride];
tmp118 = K2_000000000 * tmp117;
tmp103 = X[0];
tmp104 = X[4 * iostride];
tmp105 = tmp103 + tmp104;
tmp116 = tmp103 - tmp104;
{
fftw_real tmp109;
fftw_real tmp110;
fftw_real tmp113;
fftw_real tmp114;
ASSERT_ALIGNED_DOUBLE();
tmp109 = X[iostride];
tmp110 = X[3 * iostride];
tmp111 = K2_000000000 * (tmp109 + tmp110);
tmp120 = tmp109 - tmp110;
tmp113 = Y[-iostride];
tmp114 = Y[-3 * iostride];
tmp115 = K2_000000000 * (tmp113 - tmp114);
tmp121 = tmp114 + tmp113;
}
}
tmp108 = tmp105 + tmp107;
X[4 * iostride] = tmp108 - tmp111;
X[0] = tmp108 + tmp111;
tmp112 = tmp105 - tmp107;
X[6 * iostride] = tmp112 + tmp115;
X[2 * iostride] = tmp112 - tmp115;
{
fftw_real tmp119;
fftw_real tmp122;
fftw_real tmp123;
fftw_real tmp124;
ASSERT_ALIGNED_DOUBLE();
tmp119 = tmp116 - tmp118;
tmp122 = K1_414213562 * (tmp120 - tmp121);
X[5 * iostride] = tmp119 - tmp122;
X[iostride] = tmp119 + tmp122;
tmp123 = tmp116 + tmp118;
tmp124 = K1_414213562 * (tmp120 + tmp121);
X[3 * iostride] = tmp123 - tmp124;
X[7 * iostride] = tmp123 + tmp124;
}
}
X = X + dist;
Y = Y - dist;
for (i = 2; i < m; i = i + 2, X = X + dist, Y = Y - dist, W = W + 7) {
fftw_real tmp29;
fftw_real tmp60;
fftw_real tmp46;
fftw_real tmp56;
fftw_real tmp70;
fftw_real tmp96;
fftw_real tmp82;
fftw_real tmp92;
fftw_real tmp36;
fftw_real tmp57;
fftw_real tmp53;
fftw_real tmp61;
fftw_real tmp73;
fftw_real tmp83;
fftw_real tmp76;
fftw_real tmp84;
ASSERT_ALIGNED_DOUBLE();
{
fftw_real tmp25;
fftw_real tmp68;
fftw_real tmp42;
fftw_real tmp81;
fftw_real tmp28;
fftw_real tmp80;
fftw_real tmp45;
fftw_real tmp69;
ASSERT_ALIGNED_DOUBLE();
{
fftw_real tmp23;
fftw_real tmp24;
fftw_real tmp40;
fftw_real tmp41;
ASSERT_ALIGNED_DOUBLE();
tmp23 = X[0];
tmp24 = Y[-4 * iostride];
tmp25 = tmp23 + tmp24;
tmp68 = tmp23 - tmp24;
tmp40 = Y[0];
tmp41 = X[4 * iostride];
tmp42 = tmp40 - tmp41;
tmp81 = tmp40 + tmp41;
}
{
fftw_real tmp26;
fftw_real tmp27;
fftw_real tmp43;
fftw_real tmp44;
ASSERT_ALIGNED_DOUBLE();
tmp26 = X[2 * iostride];
tmp27 = Y[-6 * iostride];
tmp28 = tmp26 + tmp27;
tmp80 = tmp26 - tmp27;
tmp43 = Y[-2 * iostride];
tmp44 = X[6 * iostride];
tmp45 = tmp43 - tmp44;
tmp69 = tmp43 + tmp44;
}
tmp29 = tmp25 + tmp28;
tmp60 = tmp25 - tmp28;
tmp46 = tmp42 + tmp45;
tmp56 = tmp42 - tmp45;
tmp70 = tmp68 - tmp69;
tmp96 = tmp68 + tmp69;
tmp82 = tmp80 + tmp81;
tmp92 = tmp81 - tmp80;
}
{
fftw_real tmp32;
fftw_real tmp71;
fftw_real tmp49;
fftw_real tmp72;
fftw_real tmp35;
fftw_real tmp74;
fftw_real tmp52;
fftw_real tmp75;
ASSERT_ALIGNED_DOUBLE();
{
fftw_real tmp30;
fftw_real tmp31;
fftw_real tmp47;
fftw_real tmp48;
ASSERT_ALIGNED_DOUBLE();
tmp30 = X[iostride];
tmp31 = Y[-5 * iostride];
tmp32 = tmp30 + tmp31;
tmp71 = tmp30 - tmp31;
tmp47 = Y[-iostride];
tmp48 = X[5 * iostride];
tmp49 = tmp47 - tmp48;
tmp72 = tmp47 + tmp48;
}
{
fftw_real tmp33;
fftw_real tmp34;
fftw_real tmp50;
fftw_real tmp51;
ASSERT_ALIGNED_DOUBLE();
tmp33 = Y[-7 * iostride];
tmp34 = X[3 * iostride];
tmp35 = tmp33 + tmp34;
tmp74 = tmp33 - tmp34;
tmp50 = Y[-3 * iostride];
tmp51 = X[7 * iostride];
tmp52 = tmp50 - tmp51;
tmp75 = tmp50 + tmp51;
}
tmp36 = tmp32 + tmp35;
tmp57 = tmp32 - tmp35;
tmp53 = tmp49 + tmp52;
tmp61 = tmp52 - tmp49;
tmp73 = tmp71 - tmp72;
tmp83 = tmp71 + tmp72;
tmp76 = tmp74 - tmp75;
tmp84 = tmp74 + tmp75;
}
X[0] = tmp29 + tmp36;
Y[-7 * iostride] = tmp46 + tmp53;
{
fftw_real tmp38;
fftw_real tmp54;
fftw_real tmp37;
fftw_real tmp39;
ASSERT_ALIGNED_DOUBLE();
tmp38 = tmp29 - tmp36;
tmp54 = tmp46 - tmp53;
tmp37 = c_re(W[3]);
tmp39 = c_im(W[3]);
X[4 * iostride] = (tmp37 * tmp38) + (tmp39 * tmp54);
Y[-3 * iostride] = (tmp37 * tmp54) - (tmp39 * tmp38);
}
{
fftw_real tmp64;
fftw_real tmp66;
fftw_real tmp63;
fftw_real tmp65;
ASSERT_ALIGNED_DOUBLE();
tmp64 = tmp57 + tmp56;
tmp66 = tmp60 + tmp61;
tmp63 = c_re(W[1]);
tmp65 = c_im(W[1]);
Y[-5 * iostride] = (tmp63 * tmp64) - (tmp65 * tmp66);
X[2 * iostride] = (tmp65 * tmp64) + (tmp63 * tmp66);
}
{
fftw_real tmp58;
fftw_real tmp62;
fftw_real tmp55;
fftw_real tmp59;
ASSERT_ALIGNED_DOUBLE();
tmp58 = tmp56 - tmp57;
tmp62 = tmp60 - tmp61;
tmp55 = c_re(W[5]);
tmp59 = c_im(W[5]);
Y[-iostride] = (tmp55 * tmp58) - (tmp59 * tmp62);
X[6 * iostride] = (tmp59 * tmp58) + (tmp55 * tmp62);
}
{
fftw_real tmp94;
fftw_real tmp100;
fftw_real tmp98;
fftw_real tmp102;
fftw_real tmp93;
fftw_real tmp97;
ASSERT_ALIGNED_DOUBLE();
tmp93 = K707106781 * (tmp73 - tmp76);
tmp94 = tmp92 + tmp93;
tmp100 = tmp92 - tmp93;
tmp97 = K707106781 * (tmp83 + tmp84);
tmp98 = tmp96 - tmp97;
tmp102 = tmp96 + tmp97;
{
fftw_real tmp91;
fftw_real tmp95;
fftw_real tmp99;
fftw_real tmp101;
ASSERT_ALIGNED_DOUBLE();
tmp91 = c_re(W[2]);
tmp95 = c_im(W[2]);
Y[-4 * iostride] = (tmp91 * tmp94) - (tmp95 * tmp98);
X[3 * iostride] = (tmp95 * tmp94) + (tmp91 * tmp98);
tmp99 = c_re(W[6]);
tmp101 = c_im(W[6]);
Y[0] = (tmp99 * tmp100) - (tmp101 * tmp102);
X[7 * iostride] = (tmp101 * tmp100) + (tmp99 * tmp102);
}
}
{
fftw_real tmp78;
fftw_real tmp88;
fftw_real tmp86;
fftw_real tmp90;
fftw_real tmp77;
fftw_real tmp85;
ASSERT_ALIGNED_DOUBLE();
tmp77 = K707106781 * (tmp73 + tmp76);
tmp78 = tmp70 - tmp77;
tmp88 = tmp70 + tmp77;
tmp85 = K707106781 * (tmp83 - tmp84);
tmp86 = tmp82 - tmp85;
tmp90 = tmp82 + tmp85;
{
fftw_real tmp67;
fftw_real tmp79;
fftw_real tmp87;
fftw_real tmp89;
ASSERT_ALIGNED_DOUBLE();
tmp67 = c_re(W[4]);
tmp79 = c_im(W[4]);
X[5 * iostride] = (tmp67 * tmp78) + (tmp79 * tmp86);
Y[-2 * iostride] = (tmp67 * tmp86) - (tmp79 * tmp78);
tmp87 = c_re(W[0]);
tmp89 = c_im(W[0]);
X[iostride] = (tmp87 * tmp88) + (tmp89 * tmp90);
Y[-6 * iostride] = (tmp87 * tmp90) - (tmp89 * tmp88);
}
}
}
if (i == m) {
fftw_real tmp3;
fftw_real tmp7;
fftw_real tmp15;
fftw_real tmp20;
fftw_real tmp6;
fftw_real tmp12;
fftw_real tmp10;
fftw_real tmp21;
fftw_real tmp19;
fftw_real tmp22;
ASSERT_ALIGNED_DOUBLE();
{
fftw_real tmp1;
fftw_real tmp2;
fftw_real tmp13;
fftw_real tmp14;
ASSERT_ALIGNED_DOUBLE();
tmp1 = X[0];
tmp2 = X[3 * iostride];
tmp3 = tmp1 + tmp2;
tmp7 = tmp1 - tmp2;
tmp13 = Y[0];
tmp14 = Y[-3 * iostride];
tmp15 = tmp13 + tmp14;
tmp20 = tmp13 - tmp14;
}
{
fftw_real tmp4;
fftw_real tmp5;
fftw_real tmp8;
fftw_real tmp9;
ASSERT_ALIGNED_DOUBLE();
tmp4 = X[2 * iostride];
tmp5 = X[iostride];
tmp6 = tmp4 + tmp5;
tmp12 = tmp4 - tmp5;
tmp8 = Y[-2 * iostride];
tmp9 = Y[-iostride];
tmp10 = tmp8 + tmp9;
tmp21 = tmp8 - tmp9;
}
X[0] = K2_000000000 * (tmp3 + tmp6);
tmp19 = tmp3 - tmp6;
tmp22 = tmp20 - tmp21;
X[2 * iostride] = K1_414213562 * (tmp19 - tmp22);
X[6 * iostride] = -(K1_414213562 * (tmp19 + tmp22));
X[4 * iostride] = -(K2_000000000 * (tmp21 + tmp20));
{
fftw_real tmp11;
fftw_real tmp16;
fftw_real tmp17;
fftw_real tmp18;
ASSERT_ALIGNED_DOUBLE();
tmp11 = tmp7 - tmp10;
tmp16 = tmp12 + tmp15;
X[iostride] = (K1_847759065 * tmp11) - (K765366864 * tmp16);
X[5 * iostride] = -((K765366864 * tmp11) + (K1_847759065 * tmp16));
tmp17 = tmp7 + tmp10;
tmp18 = tmp15 - tmp12;
X[3 * iostride] = (K765366864 * tmp17) - (K1_847759065 * tmp18);
X[7 * iostride] = -((K1_847759065 * tmp17) + (K765366864 * tmp18));
}
}
}
static const int twiddle_order[] =
{1, 2, 3, 4, 5, 6, 7};
fftw_codelet_desc fftw_hc2hc_backward_8_desc =
{
"fftw_hc2hc_backward_8",
(void (*)()) fftw_hc2hc_backward_8,
8,
FFTW_BACKWARD,
FFTW_HC2HC,
190,
7,
twiddle_order,
};