ref: 4f9a9087f16b92662389be3dc0589629359ac8a4
dir: /libfaad/fftw/ftw_6.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 20:44:32 EST 1999 */
#include <fftw-int.h>
#include <fftw.h>
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -twiddle 6 */
/*
* This function contains 46 FP additions, 28 FP multiplications,
* (or, 32 additions, 14 multiplications, 14 fused multiply/add),
* 22 stack variables, and 24 memory accesses
*/
static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000);
static const fftw_real K866025403 = FFTW_KONST(+0.866025403784438646763723170752936183471402627);
/*
* Generator Id's :
* $Id: ftw_6.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: ftw_6.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: ftw_6.c,v 1.1 2002/04/07 21:26:04 menno Exp $
*/
void fftw_twiddle_6(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 + 5) {
fftw_real tmp7;
fftw_real tmp31;
fftw_real tmp50;
fftw_real tmp54;
fftw_real tmp29;
fftw_real tmp33;
fftw_real tmp41;
fftw_real tmp45;
fftw_real tmp18;
fftw_real tmp32;
fftw_real tmp38;
fftw_real tmp44;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp1;
fftw_real tmp49;
fftw_real tmp6;
fftw_real tmp48;
ASSERT_ALIGNED_DOUBLE;
tmp1 = c_re(inout[0]);
tmp49 = c_im(inout[0]);
{
fftw_real tmp3;
fftw_real tmp5;
fftw_real tmp2;
fftw_real tmp4;
ASSERT_ALIGNED_DOUBLE;
tmp3 = c_re(inout[3 * iostride]);
tmp5 = c_im(inout[3 * iostride]);
tmp2 = c_re(W[2]);
tmp4 = c_im(W[2]);
tmp6 = (tmp2 * tmp3) - (tmp4 * tmp5);
tmp48 = (tmp4 * tmp3) + (tmp2 * tmp5);
}
tmp7 = tmp1 - tmp6;
tmp31 = tmp1 + tmp6;
tmp50 = tmp48 + tmp49;
tmp54 = tmp49 - tmp48;
}
{
fftw_real tmp23;
fftw_real tmp39;
fftw_real tmp28;
fftw_real tmp40;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp20;
fftw_real tmp22;
fftw_real tmp19;
fftw_real tmp21;
ASSERT_ALIGNED_DOUBLE;
tmp20 = c_re(inout[4 * iostride]);
tmp22 = c_im(inout[4 * iostride]);
tmp19 = c_re(W[3]);
tmp21 = c_im(W[3]);
tmp23 = (tmp19 * tmp20) - (tmp21 * tmp22);
tmp39 = (tmp21 * tmp20) + (tmp19 * tmp22);
}
{
fftw_real tmp25;
fftw_real tmp27;
fftw_real tmp24;
fftw_real tmp26;
ASSERT_ALIGNED_DOUBLE;
tmp25 = c_re(inout[iostride]);
tmp27 = c_im(inout[iostride]);
tmp24 = c_re(W[0]);
tmp26 = c_im(W[0]);
tmp28 = (tmp24 * tmp25) - (tmp26 * tmp27);
tmp40 = (tmp26 * tmp25) + (tmp24 * tmp27);
}
tmp29 = tmp23 - tmp28;
tmp33 = tmp23 + tmp28;
tmp41 = tmp39 - tmp40;
tmp45 = tmp39 + tmp40;
}
{
fftw_real tmp12;
fftw_real tmp36;
fftw_real tmp17;
fftw_real tmp37;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp9;
fftw_real tmp11;
fftw_real tmp8;
fftw_real tmp10;
ASSERT_ALIGNED_DOUBLE;
tmp9 = c_re(inout[2 * iostride]);
tmp11 = c_im(inout[2 * iostride]);
tmp8 = c_re(W[1]);
tmp10 = c_im(W[1]);
tmp12 = (tmp8 * tmp9) - (tmp10 * tmp11);
tmp36 = (tmp10 * tmp9) + (tmp8 * tmp11);
}
{
fftw_real tmp14;
fftw_real tmp16;
fftw_real tmp13;
fftw_real tmp15;
ASSERT_ALIGNED_DOUBLE;
tmp14 = c_re(inout[5 * iostride]);
tmp16 = c_im(inout[5 * iostride]);
tmp13 = c_re(W[4]);
tmp15 = c_im(W[4]);
tmp17 = (tmp13 * tmp14) - (tmp15 * tmp16);
tmp37 = (tmp15 * tmp14) + (tmp13 * tmp16);
}
tmp18 = tmp12 - tmp17;
tmp32 = tmp12 + tmp17;
tmp38 = tmp36 - tmp37;
tmp44 = tmp36 + tmp37;
}
{
fftw_real tmp42;
fftw_real tmp30;
fftw_real tmp35;
fftw_real tmp53;
fftw_real tmp55;
fftw_real tmp56;
ASSERT_ALIGNED_DOUBLE;
tmp42 = K866025403 * (tmp38 - tmp41);
tmp30 = tmp18 + tmp29;
tmp35 = tmp7 - (K500000000 * tmp30);
c_re(inout[3 * iostride]) = tmp7 + tmp30;
c_re(inout[iostride]) = tmp35 + tmp42;
c_re(inout[5 * iostride]) = tmp35 - tmp42;
tmp53 = K866025403 * (tmp29 - tmp18);
tmp55 = tmp38 + tmp41;
tmp56 = tmp54 - (K500000000 * tmp55);
c_im(inout[iostride]) = tmp53 + tmp56;
c_im(inout[5 * iostride]) = tmp56 - tmp53;
c_im(inout[3 * iostride]) = tmp55 + tmp54;
}
{
fftw_real tmp46;
fftw_real tmp34;
fftw_real tmp43;
fftw_real tmp52;
fftw_real tmp47;
fftw_real tmp51;
ASSERT_ALIGNED_DOUBLE;
tmp46 = K866025403 * (tmp44 - tmp45);
tmp34 = tmp32 + tmp33;
tmp43 = tmp31 - (K500000000 * tmp34);
c_re(inout[0]) = tmp31 + tmp34;
c_re(inout[4 * iostride]) = tmp43 + tmp46;
c_re(inout[2 * iostride]) = tmp43 - tmp46;
tmp52 = K866025403 * (tmp33 - tmp32);
tmp47 = tmp44 + tmp45;
tmp51 = tmp50 - (K500000000 * tmp47);
c_im(inout[0]) = tmp47 + tmp50;
c_im(inout[4 * iostride]) = tmp52 + tmp51;
c_im(inout[2 * iostride]) = tmp51 - tmp52;
}
}
}
static const int twiddle_order[] =
{1, 2, 3, 4, 5};
fftw_codelet_desc fftw_twiddle_6_desc =
{
"fftw_twiddle_6",
(void (*)()) fftw_twiddle_6,
6,
FFTW_FORWARD,
FFTW_TWIDDLE,
132,
5,
twiddle_order,
};