ref: 4f9a9087f16b92662389be3dc0589629359ac8a4
dir: /libfaad/fftw/fn_2.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 2 */
/*
* This function contains 4 FP additions, 0 FP multiplications,
* (or, 4 additions, 0 multiplications, 0 fused multiply/add),
* 4 stack variables, and 8 memory accesses
*/
/*
* Generator Id's :
* $Id: fn_2.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: fn_2.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: fn_2.c,v 1.1 2002/04/07 21:26:04 menno Exp $
*/
void fftw_no_twiddle_2(const fftw_complex *input, fftw_complex *output, int istride, int ostride)
{
fftw_real tmp1;
fftw_real tmp2;
fftw_real tmp3;
fftw_real tmp4;
ASSERT_ALIGNED_DOUBLE;
tmp1 = c_re(input[0]);
tmp2 = c_re(input[istride]);
c_re(output[ostride]) = tmp1 - tmp2;
c_re(output[0]) = tmp1 + tmp2;
tmp3 = c_im(input[0]);
tmp4 = c_im(input[istride]);
c_im(output[ostride]) = tmp3 - tmp4;
c_im(output[0]) = tmp3 + tmp4;
}
fftw_codelet_desc fftw_no_twiddle_2_desc =
{
"fftw_no_twiddle_2",
(void (*)()) fftw_no_twiddle_2,
2,
FFTW_FORWARD,
FFTW_NOTW,
45,
0,
(const int *) 0,
};