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 "api/api.h"
22 #include "rdft/rdft.h"
23
X(plan_many_dft_r2c)24 X(plan) X(plan_many_dft_r2c)(int rank, const int *n,
25 int howmany,
26 R *in, const int *inembed,
27 int istride, int idist,
28 C *out, const int *onembed,
29 int ostride, int odist, unsigned flags)
30 {
31 R *ro, *io;
32 int *nfi, *nfo;
33 int inplace;
34 X(plan) p;
35
36 if (!X(many_kosherp)(rank, n, howmany)) return 0;
37
38 EXTRACT_REIM(FFT_SIGN, out, &ro, &io);
39 inplace = in == ro;
40
41 p = X(mkapiplan)(
42 0, flags,
43 X(mkproblem_rdft2_d_3pointers)(
44 X(mktensor_rowmajor)(
45 rank, n,
46 X(rdft2_pad)(rank, n, inembed, inplace, 0, &nfi),
47 X(rdft2_pad)(rank, n, onembed, inplace, 1, &nfo),
48 istride, 2 * ostride),
49 X(mktensor_1d)(howmany, idist, 2 * odist),
50 TAINT_UNALIGNED(in, flags),
51 TAINT_UNALIGNED(ro, flags), TAINT_UNALIGNED(io, flags),
52 R2HC));
53
54 X(ifree0)(nfi);
55 X(ifree0)(nfo);
56 return p;
57 }
58