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fni_2.c
Go to the documentation of this file.
1 /*
2 * Copyright (c) 1997-1999, 2003 Massachusetts Institute of Technology
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 */
19
20 /* This file was automatically generated --- DO NOT EDIT */
21 /* Generated on Mon Mar 24 02:06:18 EST 2003 */
22
23 #include "fftw-int.h"
24 #include "fftw.h"
25
26 /* Generated by: /homee/stevenj/cvs/fftw/gensrc/genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -notwiddleinv 2 */
27
28 /*
29 * This function contains 4 FP additions, 0 FP multiplications,
30 * (or, 4 additions, 0 multiplications, 0 fused multiply/add),
31 * 4 stack variables, and 8 memory accesses
32 */
33
34 /*
35 * Generator Id's :
36 * $Id: exprdag.ml,v 1.43 2003/03/16 23:43:46 stevenj Exp $
37 * $Id: fft.ml,v 1.44 2003/03/16 23:43:46 stevenj Exp $
38 * $Id: to_c.ml,v 1.26 2003/03/16 23:43:46 stevenj Exp $
39 */
40
41 void fftwi_no_twiddle_2(const fftw_complex *input, fftw_complex *output,
42 int istride, int ostride)
43 {
44 fftw_real tmp1;
45 fftw_real tmp2;
46 fftw_real tmp3;
47 fftw_real tmp4;
48 ASSERT_ALIGNED_DOUBLE;
49 tmp1 = c_re(input[0]);
50 tmp2 = c_re(input[istride]);
51 c_re(output[ostride]) = tmp1 - tmp2;
52 c_re(output[0]) = tmp1 + tmp2;
53 tmp3 = c_im(input[0]);
54 tmp4 = c_im(input[istride]);
55 c_im(output[ostride]) = tmp3 - tmp4;
56 c_im(output[0]) = tmp3 + tmp4;
57 }
58
59 fftw_codelet_desc fftwi_no_twiddle_2_desc = {
60 "fftwi_no_twiddle_2",
61 (void (*)()) fftwi_no_twiddle_2,
62 2,
63 FFTW_BACKWARD,
64 FFTW_NOTW,
65 56,
66 0,
67 (const int *) 0,
68 };
fftw_codelet_desc
Definition: fftw.h:126
fftw-int.h
fftw_complex
Definition: fftw.h:57
fftw.h
fftwi_no_twiddle_2_desc
fftw_codelet_desc fftwi_no_twiddle_2_desc
Definition: fni_2.c:59
fftwi_no_twiddle_2
void fftwi_no_twiddle_2(const fftw_complex *input, fftw_complex *output, int istride, int ostride)
Definition: fni_2.c:41
c_re
#define c_re(c)
Definition: fftw.h:60
FFTW_BACKWARD
Definition: fftw.h:64
ASSERT_ALIGNED_DOUBLE
#define ASSERT_ALIGNED_DOUBLE
Definition: fftw-int.h:236
c_im
#define c_im(c)
Definition: fftw.h:61
fftw_real
float fftw_real
Definition: fftw.h:49
FFTW_NOTW
Definition: fftw.h:121