Mercurial > hg > sv-dependency-builds
annotate src/fftw-3.3.8/rdft/rdft2-strides.c @ 82:d0c2a83c1364
Add FFTW 3.3.8 source, and a Linux build
| author | Chris Cannam |
|---|---|
| date | Tue, 19 Nov 2019 14:52:55 +0000 |
| parents | |
| children |
| rev | line source |
|---|---|
| Chris@82 | 1 /* |
| Chris@82 | 2 * Copyright (c) 2003, 2007-14 Matteo Frigo |
| Chris@82 | 3 * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology |
| Chris@82 | 4 * |
| Chris@82 | 5 * This program is free software; you can redistribute it and/or modify |
| Chris@82 | 6 * it under the terms of the GNU General Public License as published by |
| Chris@82 | 7 * the Free Software Foundation; either version 2 of the License, or |
| Chris@82 | 8 * (at your option) any later version. |
| Chris@82 | 9 * |
| Chris@82 | 10 * This program is distributed in the hope that it will be useful, |
| Chris@82 | 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| Chris@82 | 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| Chris@82 | 13 * GNU General Public License for more details. |
| Chris@82 | 14 * |
| Chris@82 | 15 * You should have received a copy of the GNU General Public License |
| Chris@82 | 16 * along with this program; if not, write to the Free Software |
| Chris@82 | 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| Chris@82 | 18 * |
| Chris@82 | 19 */ |
| Chris@82 | 20 |
| Chris@82 | 21 #include "rdft/rdft.h" |
| Chris@82 | 22 |
| Chris@82 | 23 /* Deal with annoyance because the tensor (is,os) applies to |
| Chris@82 | 24 (r,rio/iio) for R2HC and vice-versa for HC2R. We originally had |
| Chris@82 | 25 (is,os) always apply to (r,rio/iio), but this causes other |
| Chris@82 | 26 headaches with the tensor functions. */ |
| Chris@82 | 27 void X(rdft2_strides)(rdft_kind kind, const iodim *d, INT *rs, INT *cs) |
| Chris@82 | 28 { |
| Chris@82 | 29 if (kind == R2HC) { |
| Chris@82 | 30 *rs = d->is; |
| Chris@82 | 31 *cs = d->os; |
| Chris@82 | 32 } |
| Chris@82 | 33 else { |
| Chris@82 | 34 A(kind == HC2R); |
| Chris@82 | 35 *rs = d->os; |
| Chris@82 | 36 *cs = d->is; |
| Chris@82 | 37 } |
| Chris@82 | 38 } |