annotate src/fftw-3.3.8/api/plan-many-dft-r2c.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
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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 "api/api.h"
Chris@82 22 #include "rdft/rdft.h"
Chris@82 23
Chris@82 24 X(plan) X(plan_many_dft_r2c)(int rank, const int *n,
Chris@82 25 int howmany,
Chris@82 26 R *in, const int *inembed,
Chris@82 27 int istride, int idist,
Chris@82 28 C *out, const int *onembed,
Chris@82 29 int ostride, int odist, unsigned flags)
Chris@82 30 {
Chris@82 31 R *ro, *io;
Chris@82 32 int *nfi, *nfo;
Chris@82 33 int inplace;
Chris@82 34 X(plan) p;
Chris@82 35
Chris@82 36 if (!X(many_kosherp)(rank, n, howmany)) return 0;
Chris@82 37
Chris@82 38 EXTRACT_REIM(FFT_SIGN, out, &ro, &io);
Chris@82 39 inplace = in == ro;
Chris@82 40
Chris@82 41 p = X(mkapiplan)(
Chris@82 42 0, flags,
Chris@82 43 X(mkproblem_rdft2_d_3pointers)(
Chris@82 44 X(mktensor_rowmajor)(
Chris@82 45 rank, n,
Chris@82 46 X(rdft2_pad)(rank, n, inembed, inplace, 0, &nfi),
Chris@82 47 X(rdft2_pad)(rank, n, onembed, inplace, 1, &nfo),
Chris@82 48 istride, 2 * ostride),
Chris@82 49 X(mktensor_1d)(howmany, idist, 2 * odist),
Chris@82 50 TAINT_UNALIGNED(in, flags),
Chris@82 51 TAINT_UNALIGNED(ro, flags), TAINT_UNALIGNED(io, flags),
Chris@82 52 R2HC));
Chris@82 53
Chris@82 54 X(ifree0)(nfi);
Chris@82 55 X(ifree0)(nfo);
Chris@82 56 return p;
Chris@82 57 }