Rev 2 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
2 | pj | 1 | /* |
2 | * Copyright (c) 1997-1999 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 Tue May 18 13:55:18 EDT 1999 */ |
||
22 | |||
23 | #include <ports/fftw-int.h> |
||
24 | #include <ports/fftw.h> |
||
25 | |||
26 | /* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -twiddle 2 */ |
||
27 | |||
28 | /* |
||
29 | * This function contains 6 FP additions, 4 FP multiplications, |
||
30 | * (or, 4 additions, 2 multiplications, 2 fused multiply/add), |
||
31 | * 10 stack variables, and 8 memory accesses |
||
32 | */ |
||
33 | |||
34 | /* |
||
35 | * Generator Id's : |
||
36 | * $Id: ftw_2.c,v 1.1.1.1 2002-03-29 14:12:56 pj Exp $ |
||
37 | * $Id: ftw_2.c,v 1.1.1.1 2002-03-29 14:12:56 pj Exp $ |
||
38 | * $Id: ftw_2.c,v 1.1.1.1 2002-03-29 14:12:56 pj Exp $ |
||
39 | */ |
||
40 | |||
41 | void fftw_twiddle_2(fftw_complex *A, const fftw_complex *W, int iostride, int m, int dist) |
||
42 | { |
||
43 | int i; |
||
44 | fftw_complex *inout; |
||
45 | inout = A; |
||
46 | for (i = m; i > 0; i = i - 1, inout = inout + dist, W = W + 1) { |
||
47 | fftw_real tmp1; |
||
48 | fftw_real tmp8; |
||
49 | fftw_real tmp6; |
||
50 | fftw_real tmp7; |
||
51 | ASSERT_ALIGNED_DOUBLE(); |
||
52 | tmp1 = c_re(inout[0]); |
||
53 | tmp8 = c_im(inout[0]); |
||
54 | { |
||
55 | fftw_real tmp3; |
||
56 | fftw_real tmp5; |
||
57 | fftw_real tmp2; |
||
58 | fftw_real tmp4; |
||
59 | ASSERT_ALIGNED_DOUBLE(); |
||
60 | tmp3 = c_re(inout[iostride]); |
||
61 | tmp5 = c_im(inout[iostride]); |
||
62 | tmp2 = c_re(W[0]); |
||
63 | tmp4 = c_im(W[0]); |
||
64 | tmp6 = (tmp2 * tmp3) - (tmp4 * tmp5); |
||
65 | tmp7 = (tmp4 * tmp3) + (tmp2 * tmp5); |
||
66 | } |
||
67 | c_re(inout[iostride]) = tmp1 - tmp6; |
||
68 | c_re(inout[0]) = tmp1 + tmp6; |
||
69 | c_im(inout[0]) = tmp7 + tmp8; |
||
70 | c_im(inout[iostride]) = tmp8 - tmp7; |
||
71 | } |
||
72 | } |
||
73 | |||
74 | static const int twiddle_order[] = |
||
75 | {1}; |
||
76 | fftw_codelet_desc fftw_twiddle_2_desc = |
||
77 | { |
||
78 | "fftw_twiddle_2", |
||
79 | (void (*)()) fftw_twiddle_2, |
||
80 | 2, |
||
81 | FFTW_FORWARD, |
||
82 | FFTW_TWIDDLE, |
||
83 | 44, |
||
84 | 1, |
||
85 | twiddle_order, |
||
86 | }; |