/*
* Copyright (c) 2003, 2007-11 Matteo Frigo
* Copyright (c) 2003, 2007-11 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.h"
#include "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;
}