/src/fftw3/kernel/stride.c
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1 | | /* |
2 | | * Copyright (c) 2003, 2007-14 Matteo Frigo |
3 | | * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology |
4 | | * |
5 | | * This program is free software; you can redistribute it and/or modify |
6 | | * it under the terms of the GNU General Public License as published by |
7 | | * the Free Software Foundation; either version 2 of the License, or |
8 | | * (at your option) any later version. |
9 | | * |
10 | | * This program is distributed in the hope that it will be useful, |
11 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | | * GNU General Public License for more details. |
14 | | * |
15 | | * You should have received a copy of the GNU General Public License |
16 | | * along with this program; if not, write to the Free Software |
17 | | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
18 | | * |
19 | | */ |
20 | | |
21 | | #include "kernel/ifftw.h" |
22 | | |
23 | | const INT X(an_INT_guaranteed_to_be_zero) = 0; |
24 | | |
25 | | #ifdef PRECOMPUTE_ARRAY_INDICES |
26 | | stride X(mkstride)(INT n, INT s) |
27 | 6.82k | { |
28 | 6.82k | int i; |
29 | 6.82k | INT *p; |
30 | | |
31 | 6.82k | A(n >= 0); |
32 | 6.82k | p = (INT *) MALLOC((size_t)n * sizeof(INT), STRIDES); |
33 | | |
34 | 63.6k | for (i = 0; i < n; ++i) |
35 | 56.8k | p[i] = s * i; |
36 | | |
37 | 6.82k | return p; |
38 | 6.82k | } |
39 | | |
40 | | void X(stride_destroy)(stride p) |
41 | 6.82k | { |
42 | 6.82k | X(ifree0)(p); |
43 | 6.82k | } |
44 | | |
45 | | #endif |