iup-stack/fftw/api/plan-guru-dft-c2r.h

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2023-02-20 16:44:45 +00:00
/*
* 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) XGURU(dft_c2r)(int rank, const IODIM *dims,
int howmany_rank, const IODIM *howmany_dims,
C *in, R *out, unsigned flags)
{
R *ri, *ii;
if (!GURU_KOSHERP(rank, dims, howmany_rank, howmany_dims)) return 0;
EXTRACT_REIM(FFT_SIGN, in, &ri, &ii);
if (out != ri)
flags |= FFTW_DESTROY_INPUT;
return X(mkapiplan)(
0, flags,
X(mkproblem_rdft2_d_3pointers)(
MKTENSOR_IODIMS(rank, dims, 2, 1),
MKTENSOR_IODIMS(howmany_rank, howmany_dims, 2, 1),
TAINT_UNALIGNED(out, flags),
TAINT_UNALIGNED(ri, flags),
TAINT_UNALIGNED(ii, flags), HC2R));
}