ref: d6839757dffdf592ae300726a64e0f3199a9cd56
dir: /libfaad/fftw/ftwi_7.c/
/*
* 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 20:44:58 EST 1999 */
#include <fftw-int.h>
#include <fftw.h>
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -twiddleinv 7 */
/*
* This function contains 72 FP additions, 60 FP multiplications,
* (or, 60 additions, 48 multiplications, 12 fused multiply/add),
* 24 stack variables, and 28 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 K433883739 = FFTW_KONST(+0.433883739117558120475768332848358754609990728);
static const fftw_real K974927912 = FFTW_KONST(+0.974927912181823607018131682993931217232785801);
static const fftw_real K781831482 = FFTW_KONST(+0.781831482468029808708444526674057750232334519);
/*
* Generator Id's :
* $Id: ftwi_7.c,v 1.1 2002/04/07 21:26:05 menno Exp $
* $Id: ftwi_7.c,v 1.1 2002/04/07 21:26:05 menno Exp $
* $Id: ftwi_7.c,v 1.1 2002/04/07 21:26:05 menno Exp $
*/
void fftwi_twiddle_7(fftw_complex *A, const fftw_complex *W, int iostride, int m, int dist)
{
int i;
fftw_complex *inout;
inout = A;
for (i = m; i > 0; i = i - 1, inout = inout + dist, W = W + 6) {
fftw_real tmp1;
fftw_real tmp53;
fftw_real tmp12;
fftw_real tmp54;
fftw_real tmp38;
fftw_real tmp50;
fftw_real tmp23;
fftw_real tmp55;
fftw_real tmp44;
fftw_real tmp51;
fftw_real tmp34;
fftw_real tmp56;
fftw_real tmp41;
fftw_real tmp52;
ASSERT_ALIGNED_DOUBLE;
tmp1 = c_re(inout[0]);
tmp53 = c_im(inout[0]);
{
fftw_real tmp6;
fftw_real tmp37;
fftw_real tmp11;
fftw_real tmp36;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp3;
fftw_real tmp5;
fftw_real tmp2;
fftw_real tmp4;
ASSERT_ALIGNED_DOUBLE;
tmp3 = c_re(inout[iostride]);
tmp5 = c_im(inout[iostride]);
tmp2 = c_re(W[0]);
tmp4 = c_im(W[0]);
tmp6 = (tmp2 * tmp3) + (tmp4 * tmp5);
tmp37 = (tmp2 * tmp5) - (tmp4 * tmp3);
}
{
fftw_real tmp8;
fftw_real tmp10;
fftw_real tmp7;
fftw_real tmp9;
ASSERT_ALIGNED_DOUBLE;
tmp8 = c_re(inout[6 * iostride]);
tmp10 = c_im(inout[6 * iostride]);
tmp7 = c_re(W[5]);
tmp9 = c_im(W[5]);
tmp11 = (tmp7 * tmp8) + (tmp9 * tmp10);
tmp36 = (tmp7 * tmp10) - (tmp9 * tmp8);
}
tmp12 = tmp6 + tmp11;
tmp54 = tmp6 - tmp11;
tmp38 = tmp36 - tmp37;
tmp50 = tmp37 + tmp36;
}
{
fftw_real tmp17;
fftw_real tmp43;
fftw_real tmp22;
fftw_real tmp42;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp14;
fftw_real tmp16;
fftw_real tmp13;
fftw_real tmp15;
ASSERT_ALIGNED_DOUBLE;
tmp14 = c_re(inout[2 * iostride]);
tmp16 = c_im(inout[2 * iostride]);
tmp13 = c_re(W[1]);
tmp15 = c_im(W[1]);
tmp17 = (tmp13 * tmp14) + (tmp15 * tmp16);
tmp43 = (tmp13 * tmp16) - (tmp15 * tmp14);
}
{
fftw_real tmp19;
fftw_real tmp21;
fftw_real tmp18;
fftw_real tmp20;
ASSERT_ALIGNED_DOUBLE;
tmp19 = c_re(inout[5 * iostride]);
tmp21 = c_im(inout[5 * iostride]);
tmp18 = c_re(W[4]);
tmp20 = c_im(W[4]);
tmp22 = (tmp18 * tmp19) + (tmp20 * tmp21);
tmp42 = (tmp18 * tmp21) - (tmp20 * tmp19);
}
tmp23 = tmp17 + tmp22;
tmp55 = tmp17 - tmp22;
tmp44 = tmp42 - tmp43;
tmp51 = tmp43 + tmp42;
}
{
fftw_real tmp28;
fftw_real tmp40;
fftw_real tmp33;
fftw_real tmp39;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp25;
fftw_real tmp27;
fftw_real tmp24;
fftw_real tmp26;
ASSERT_ALIGNED_DOUBLE;
tmp25 = c_re(inout[3 * iostride]);
tmp27 = c_im(inout[3 * iostride]);
tmp24 = c_re(W[2]);
tmp26 = c_im(W[2]);
tmp28 = (tmp24 * tmp25) + (tmp26 * tmp27);
tmp40 = (tmp24 * tmp27) - (tmp26 * tmp25);
}
{
fftw_real tmp30;
fftw_real tmp32;
fftw_real tmp29;
fftw_real tmp31;
ASSERT_ALIGNED_DOUBLE;
tmp30 = c_re(inout[4 * iostride]);
tmp32 = c_im(inout[4 * iostride]);
tmp29 = c_re(W[3]);
tmp31 = c_im(W[3]);
tmp33 = (tmp29 * tmp30) + (tmp31 * tmp32);
tmp39 = (tmp29 * tmp32) - (tmp31 * tmp30);
}
tmp34 = tmp28 + tmp33;
tmp56 = tmp28 - tmp33;
tmp41 = tmp39 - tmp40;
tmp52 = tmp40 + tmp39;
}
{
fftw_real tmp47;
fftw_real tmp46;
fftw_real tmp59;
fftw_real tmp60;
ASSERT_ALIGNED_DOUBLE;
c_re(inout[0]) = tmp1 + tmp12 + tmp23 + tmp34;
tmp47 = (K781831482 * tmp38) + (K974927912 * tmp44) + (K433883739 * tmp41);
tmp46 = tmp1 + (K623489801 * tmp12) - (K900968867 * tmp34) - (K222520933 * tmp23);
c_re(inout[6 * iostride]) = tmp46 - tmp47;
c_re(inout[iostride]) = tmp46 + tmp47;
{
fftw_real tmp49;
fftw_real tmp48;
fftw_real tmp45;
fftw_real tmp35;
ASSERT_ALIGNED_DOUBLE;
tmp49 = (K433883739 * tmp38) + (K974927912 * tmp41) - (K781831482 * tmp44);
tmp48 = tmp1 + (K623489801 * tmp23) - (K222520933 * tmp34) - (K900968867 * tmp12);
c_re(inout[4 * iostride]) = tmp48 - tmp49;
c_re(inout[3 * iostride]) = tmp48 + tmp49;
tmp45 = (K974927912 * tmp38) - (K781831482 * tmp41) - (K433883739 * tmp44);
tmp35 = tmp1 + (K623489801 * tmp34) - (K900968867 * tmp23) - (K222520933 * tmp12);
c_re(inout[5 * iostride]) = tmp35 - tmp45;
c_re(inout[2 * iostride]) = tmp35 + tmp45;
}
c_im(inout[0]) = tmp50 + tmp51 + tmp52 + tmp53;
tmp59 = (K974927912 * tmp54) - (K781831482 * tmp56) - (K433883739 * tmp55);
tmp60 = (K623489801 * tmp52) + tmp53 - (K900968867 * tmp51) - (K222520933 * tmp50);
c_im(inout[2 * iostride]) = tmp59 + tmp60;
c_im(inout[5 * iostride]) = tmp60 - tmp59;
{
fftw_real tmp61;
fftw_real tmp62;
fftw_real tmp57;
fftw_real tmp58;
ASSERT_ALIGNED_DOUBLE;
tmp61 = (K433883739 * tmp54) + (K974927912 * tmp56) - (K781831482 * tmp55);
tmp62 = (K623489801 * tmp51) + tmp53 - (K222520933 * tmp52) - (K900968867 * tmp50);
c_im(inout[3 * iostride]) = tmp61 + tmp62;
c_im(inout[4 * iostride]) = tmp62 - tmp61;
tmp57 = (K781831482 * tmp54) + (K974927912 * tmp55) + (K433883739 * tmp56);
tmp58 = (K623489801 * tmp50) + tmp53 - (K900968867 * tmp52) - (K222520933 * tmp51);
c_im(inout[iostride]) = tmp57 + tmp58;
c_im(inout[6 * iostride]) = tmp58 - tmp57;
}
}
}
}
static const int twiddle_order[] =
{1, 2, 3, 4, 5, 6};
fftw_codelet_desc fftwi_twiddle_7_desc =
{
"fftwi_twiddle_7",
(void (*)()) fftwi_twiddle_7,
7,
FFTW_BACKWARD,
FFTW_TWIDDLE,
165,
6,
twiddle_order,
};