ref: d6839757dffdf592ae300726a64e0f3199a9cd56
dir: /libfaad/fftw/fn_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 20:43:47 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 6 */
/*
* This function contains 36 FP additions, 8 FP multiplications,
* (or, 32 additions, 4 multiplications, 4 fused multiply/add),
* 20 stack variables, and 24 memory accesses
*/
static const fftw_real K866025403 = FFTW_KONST(+0.866025403784438646763723170752936183471402627);
static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000);
/*
* Generator Id's :
* $Id: fn_6.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: fn_6.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: fn_6.c,v 1.1 2002/04/07 21:26:04 menno Exp $
*/
void fftw_no_twiddle_6(const fftw_complex *input, fftw_complex *output, int istride, int ostride)
{
fftw_real tmp3;
fftw_real tmp11;
fftw_real tmp26;
fftw_real tmp33;
fftw_real tmp6;
fftw_real tmp12;
fftw_real tmp9;
fftw_real tmp13;
fftw_real tmp10;
fftw_real tmp14;
fftw_real tmp18;
fftw_real tmp30;
fftw_real tmp21;
fftw_real tmp31;
fftw_real tmp27;
fftw_real tmp34;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp1;
fftw_real tmp2;
fftw_real tmp24;
fftw_real tmp25;
ASSERT_ALIGNED_DOUBLE;
tmp1 = c_re(input[0]);
tmp2 = c_re(input[3 * istride]);
tmp3 = tmp1 - tmp2;
tmp11 = tmp1 + tmp2;
tmp24 = c_im(input[0]);
tmp25 = c_im(input[3 * istride]);
tmp26 = tmp24 - tmp25;
tmp33 = tmp24 + tmp25;
}
{
fftw_real tmp4;
fftw_real tmp5;
fftw_real tmp7;
fftw_real tmp8;
ASSERT_ALIGNED_DOUBLE;
tmp4 = c_re(input[2 * istride]);
tmp5 = c_re(input[5 * istride]);
tmp6 = tmp4 - tmp5;
tmp12 = tmp4 + tmp5;
tmp7 = c_re(input[4 * istride]);
tmp8 = c_re(input[istride]);
tmp9 = tmp7 - tmp8;
tmp13 = tmp7 + tmp8;
}
tmp10 = tmp6 + tmp9;
tmp14 = tmp12 + tmp13;
{
fftw_real tmp16;
fftw_real tmp17;
fftw_real tmp19;
fftw_real tmp20;
ASSERT_ALIGNED_DOUBLE;
tmp16 = c_im(input[2 * istride]);
tmp17 = c_im(input[5 * istride]);
tmp18 = tmp16 - tmp17;
tmp30 = tmp16 + tmp17;
tmp19 = c_im(input[4 * istride]);
tmp20 = c_im(input[istride]);
tmp21 = tmp19 - tmp20;
tmp31 = tmp19 + tmp20;
}
tmp27 = tmp18 + tmp21;
tmp34 = tmp30 + tmp31;
{
fftw_real tmp15;
fftw_real tmp22;
fftw_real tmp29;
fftw_real tmp32;
ASSERT_ALIGNED_DOUBLE;
c_re(output[3 * ostride]) = tmp3 + tmp10;
tmp15 = tmp3 - (K500000000 * tmp10);
tmp22 = K866025403 * (tmp18 - tmp21);
c_re(output[5 * ostride]) = tmp15 - tmp22;
c_re(output[ostride]) = tmp15 + tmp22;
c_re(output[0]) = tmp11 + tmp14;
tmp29 = tmp11 - (K500000000 * tmp14);
tmp32 = K866025403 * (tmp30 - tmp31);
c_re(output[2 * ostride]) = tmp29 - tmp32;
c_re(output[4 * ostride]) = tmp29 + tmp32;
}
{
fftw_real tmp23;
fftw_real tmp28;
fftw_real tmp35;
fftw_real tmp36;
ASSERT_ALIGNED_DOUBLE;
c_im(output[3 * ostride]) = tmp26 + tmp27;
tmp23 = K866025403 * (tmp9 - tmp6);
tmp28 = tmp26 - (K500000000 * tmp27);
c_im(output[ostride]) = tmp23 + tmp28;
c_im(output[5 * ostride]) = tmp28 - tmp23;
c_im(output[0]) = tmp33 + tmp34;
tmp35 = tmp33 - (K500000000 * tmp34);
tmp36 = K866025403 * (tmp13 - tmp12);
c_im(output[2 * ostride]) = tmp35 - tmp36;
c_im(output[4 * ostride]) = tmp36 + tmp35;
}
}
fftw_codelet_desc fftw_no_twiddle_6_desc =
{
"fftw_no_twiddle_6",
(void (*)()) fftw_no_twiddle_6,
6,
FFTW_FORWARD,
FFTW_NOTW,
133,
0,
(const int *) 0,
};