ref: 4f9a9087f16b92662389be3dc0589629359ac8a4
dir: /libfaad/fftw/fni_5.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 20:44:04 EST 1999 */
#include <fftw-int.h>
#include <fftw.h>
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -notwiddleinv 5 */
/*
* This function contains 32 FP additions, 12 FP multiplications,
* (or, 26 additions, 6 multiplications, 6 fused multiply/add),
* 16 stack variables, and 20 memory accesses
*/
static const fftw_real K250000000 = FFTW_KONST(+0.250000000000000000000000000000000000000000000);
static const fftw_real K951056516 = FFTW_KONST(+0.951056516295153572116439333379382143405698634);
static const fftw_real K587785252 = FFTW_KONST(+0.587785252292473129168705954639072768597652438);
static const fftw_real K559016994 = FFTW_KONST(+0.559016994374947424102293417182819058860154590);
/*
* Generator Id's :
* $Id: fni_5.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: fni_5.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: fni_5.c,v 1.1 2002/04/07 21:26:04 menno Exp $
*/
void fftwi_no_twiddle_5(const fftw_complex *input, fftw_complex *output, int istride, int ostride)
{
fftw_real tmp1;
fftw_real tmp27;
fftw_real tmp8;
fftw_real tmp10;
fftw_real tmp21;
fftw_real tmp22;
fftw_real tmp14;
fftw_real tmp28;
fftw_real tmp26;
fftw_real tmp17;
ASSERT_ALIGNED_DOUBLE;
tmp1 = c_re(input[0]);
tmp27 = c_im(input[0]);
{
fftw_real tmp2;
fftw_real tmp3;
fftw_real tmp4;
fftw_real tmp5;
fftw_real tmp6;
fftw_real tmp7;
ASSERT_ALIGNED_DOUBLE;
tmp2 = c_re(input[istride]);
tmp3 = c_re(input[4 * istride]);
tmp4 = tmp2 + tmp3;
tmp5 = c_re(input[2 * istride]);
tmp6 = c_re(input[3 * istride]);
tmp7 = tmp5 + tmp6;
tmp8 = tmp4 + tmp7;
tmp10 = K559016994 * (tmp4 - tmp7);
tmp21 = tmp2 - tmp3;
tmp22 = tmp5 - tmp6;
}
{
fftw_real tmp12;
fftw_real tmp13;
fftw_real tmp24;
fftw_real tmp15;
fftw_real tmp16;
fftw_real tmp25;
ASSERT_ALIGNED_DOUBLE;
tmp12 = c_im(input[istride]);
tmp13 = c_im(input[4 * istride]);
tmp24 = tmp12 + tmp13;
tmp15 = c_im(input[2 * istride]);
tmp16 = c_im(input[3 * istride]);
tmp25 = tmp15 + tmp16;
tmp14 = tmp12 - tmp13;
tmp28 = tmp24 + tmp25;
tmp26 = K559016994 * (tmp24 - tmp25);
tmp17 = tmp15 - tmp16;
}
c_re(output[0]) = tmp1 + tmp8;
{
fftw_real tmp18;
fftw_real tmp20;
fftw_real tmp11;
fftw_real tmp19;
fftw_real tmp9;
ASSERT_ALIGNED_DOUBLE;
tmp18 = (K587785252 * tmp14) - (K951056516 * tmp17);
tmp20 = (K951056516 * tmp14) + (K587785252 * tmp17);
tmp9 = tmp1 - (K250000000 * tmp8);
tmp11 = tmp9 - tmp10;
tmp19 = tmp10 + tmp9;
c_re(output[2 * ostride]) = tmp11 - tmp18;
c_re(output[3 * ostride]) = tmp11 + tmp18;
c_re(output[ostride]) = tmp19 - tmp20;
c_re(output[4 * ostride]) = tmp19 + tmp20;
}
c_im(output[0]) = tmp27 + tmp28;
{
fftw_real tmp23;
fftw_real tmp31;
fftw_real tmp30;
fftw_real tmp32;
fftw_real tmp29;
ASSERT_ALIGNED_DOUBLE;
tmp23 = (K951056516 * tmp21) + (K587785252 * tmp22);
tmp31 = (K587785252 * tmp21) - (K951056516 * tmp22);
tmp29 = tmp27 - (K250000000 * tmp28);
tmp30 = tmp26 + tmp29;
tmp32 = tmp29 - tmp26;
c_im(output[ostride]) = tmp23 + tmp30;
c_im(output[4 * ostride]) = tmp30 - tmp23;
c_im(output[2 * ostride]) = tmp31 + tmp32;
c_im(output[3 * ostride]) = tmp32 - tmp31;
}
}
fftw_codelet_desc fftwi_no_twiddle_5_desc =
{
"fftwi_no_twiddle_5",
(void (*)()) fftwi_no_twiddle_5,
5,
FFTW_BACKWARD,
FFTW_NOTW,
122,
0,
(const int *) 0,
};