ref: 4f9a9087f16b92662389be3dc0589629359ac8a4
dir: /libfaad/fftw/fn_8.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 20:43:47 EST 1999 */
#include <fftw-int.h>
#include <fftw.h>
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -notwiddle 8 */
/*
* This function contains 52 FP additions, 4 FP multiplications,
* (or, 52 additions, 4 multiplications, 0 fused multiply/add),
* 26 stack variables, and 32 memory accesses
*/
static const fftw_real K707106781 = FFTW_KONST(+0.707106781186547524400844362104849039284835938);
/*
* Generator Id's :
* $Id: fn_8.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: fn_8.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: fn_8.c,v 1.1 2002/04/07 21:26:04 menno Exp $
*/
void fftw_no_twiddle_8(const fftw_complex *input, fftw_complex *output, int istride, int ostride)
{
fftw_real tmp3;
fftw_real tmp23;
fftw_real tmp18;
fftw_real tmp38;
fftw_real tmp6;
fftw_real tmp37;
fftw_real tmp21;
fftw_real tmp24;
fftw_real tmp13;
fftw_real tmp49;
fftw_real tmp35;
fftw_real tmp43;
fftw_real tmp10;
fftw_real tmp48;
fftw_real tmp30;
fftw_real tmp42;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp1;
fftw_real tmp2;
fftw_real tmp19;
fftw_real tmp20;
ASSERT_ALIGNED_DOUBLE;
tmp1 = c_re(input[0]);
tmp2 = c_re(input[4 * istride]);
tmp3 = tmp1 + tmp2;
tmp23 = tmp1 - tmp2;
{
fftw_real tmp16;
fftw_real tmp17;
fftw_real tmp4;
fftw_real tmp5;
ASSERT_ALIGNED_DOUBLE;
tmp16 = c_im(input[0]);
tmp17 = c_im(input[4 * istride]);
tmp18 = tmp16 + tmp17;
tmp38 = tmp16 - tmp17;
tmp4 = c_re(input[2 * istride]);
tmp5 = c_re(input[6 * istride]);
tmp6 = tmp4 + tmp5;
tmp37 = tmp4 - tmp5;
}
tmp19 = c_im(input[2 * istride]);
tmp20 = c_im(input[6 * istride]);
tmp21 = tmp19 + tmp20;
tmp24 = tmp19 - tmp20;
{
fftw_real tmp11;
fftw_real tmp12;
fftw_real tmp31;
fftw_real tmp32;
fftw_real tmp33;
fftw_real tmp34;
ASSERT_ALIGNED_DOUBLE;
tmp11 = c_re(input[7 * istride]);
tmp12 = c_re(input[3 * istride]);
tmp31 = tmp11 - tmp12;
tmp32 = c_im(input[7 * istride]);
tmp33 = c_im(input[3 * istride]);
tmp34 = tmp32 - tmp33;
tmp13 = tmp11 + tmp12;
tmp49 = tmp32 + tmp33;
tmp35 = tmp31 - tmp34;
tmp43 = tmp31 + tmp34;
}
{
fftw_real tmp8;
fftw_real tmp9;
fftw_real tmp26;
fftw_real tmp27;
fftw_real tmp28;
fftw_real tmp29;
ASSERT_ALIGNED_DOUBLE;
tmp8 = c_re(input[istride]);
tmp9 = c_re(input[5 * istride]);
tmp26 = tmp8 - tmp9;
tmp27 = c_im(input[istride]);
tmp28 = c_im(input[5 * istride]);
tmp29 = tmp27 - tmp28;
tmp10 = tmp8 + tmp9;
tmp48 = tmp27 + tmp28;
tmp30 = tmp26 + tmp29;
tmp42 = tmp29 - tmp26;
}
}
{
fftw_real tmp7;
fftw_real tmp14;
fftw_real tmp15;
fftw_real tmp22;
ASSERT_ALIGNED_DOUBLE;
tmp7 = tmp3 + tmp6;
tmp14 = tmp10 + tmp13;
c_re(output[4 * ostride]) = tmp7 - tmp14;
c_re(output[0]) = tmp7 + tmp14;
tmp15 = tmp13 - tmp10;
tmp22 = tmp18 - tmp21;
c_im(output[2 * ostride]) = tmp15 + tmp22;
c_im(output[6 * ostride]) = tmp22 - tmp15;
}
{
fftw_real tmp51;
fftw_real tmp52;
fftw_real tmp47;
fftw_real tmp50;
ASSERT_ALIGNED_DOUBLE;
tmp51 = tmp18 + tmp21;
tmp52 = tmp48 + tmp49;
c_im(output[4 * ostride]) = tmp51 - tmp52;
c_im(output[0]) = tmp51 + tmp52;
tmp47 = tmp3 - tmp6;
tmp50 = tmp48 - tmp49;
c_re(output[6 * ostride]) = tmp47 - tmp50;
c_re(output[2 * ostride]) = tmp47 + tmp50;
}
{
fftw_real tmp25;
fftw_real tmp36;
fftw_real tmp39;
fftw_real tmp40;
ASSERT_ALIGNED_DOUBLE;
tmp25 = tmp23 + tmp24;
tmp36 = K707106781 * (tmp30 + tmp35);
c_re(output[5 * ostride]) = tmp25 - tmp36;
c_re(output[ostride]) = tmp25 + tmp36;
tmp39 = tmp37 + tmp38;
tmp40 = K707106781 * (tmp35 - tmp30);
c_im(output[7 * ostride]) = tmp39 - tmp40;
c_im(output[3 * ostride]) = tmp39 + tmp40;
}
{
fftw_real tmp45;
fftw_real tmp46;
fftw_real tmp41;
fftw_real tmp44;
ASSERT_ALIGNED_DOUBLE;
tmp45 = tmp38 - tmp37;
tmp46 = K707106781 * (tmp42 + tmp43);
c_im(output[5 * ostride]) = tmp45 - tmp46;
c_im(output[ostride]) = tmp45 + tmp46;
tmp41 = tmp23 - tmp24;
tmp44 = K707106781 * (tmp42 - tmp43);
c_re(output[7 * ostride]) = tmp41 - tmp44;
c_re(output[3 * ostride]) = tmp41 + tmp44;
}
}
fftw_codelet_desc fftw_no_twiddle_8_desc =
{
"fftw_no_twiddle_8",
(void (*)()) fftw_no_twiddle_8,
8,
FFTW_FORWARD,
FFTW_NOTW,
177,
0,
(const int *) 0,
};