mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-01 18:42:40 +00:00
59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/*
|
|
* Copyright (c) 2003, 2007-14 Matteo Frigo
|
|
* Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#include "api/api.h"
|
|
#include "rdft/rdft.h"
|
|
|
|
X(plan) X(plan_many_dft_c2r)(int rank, const int *n,
|
|
int howmany,
|
|
C *in, const int *inembed,
|
|
int istride, int idist,
|
|
R *out, const int *onembed,
|
|
int ostride, int odist, unsigned flags)
|
|
{
|
|
R *ri, *ii;
|
|
int *nfi, *nfo;
|
|
int inplace;
|
|
X(plan) p;
|
|
|
|
if (!X(many_kosherp)(rank, n, howmany)) return 0;
|
|
|
|
EXTRACT_REIM(FFT_SIGN, in, &ri, &ii);
|
|
inplace = out == ri;
|
|
|
|
if (!inplace)
|
|
flags |= FFTW_DESTROY_INPUT;
|
|
p = X(mkapiplan)(
|
|
0, flags,
|
|
X(mkproblem_rdft2_d_3pointers)(
|
|
X(mktensor_rowmajor)(
|
|
rank, n,
|
|
X(rdft2_pad)(rank, n, inembed, inplace, 1, &nfi),
|
|
X(rdft2_pad)(rank, n, onembed, inplace, 0, &nfo),
|
|
2 * istride, ostride),
|
|
X(mktensor_1d)(howmany, 2 * idist, odist),
|
|
TAINT_UNALIGNED(out, flags),
|
|
TAINT_UNALIGNED(ri, flags), TAINT_UNALIGNED(ii, flags),
|
|
HC2R));
|
|
|
|
X(ifree0)(nfi);
|
|
X(ifree0)(nfo);
|
|
return p;
|
|
}
|