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-rw-r--r--src/fftw3/api/plan-many-dft-c2r.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/src/fftw3/api/plan-many-dft-c2r.c b/src/fftw3/api/plan-many-dft-c2r.c
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+++ b/src/fftw3/api/plan-many-dft-c2r.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2003 Matteo Frigo
+ * Copyright (c) 2003 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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;
+
+ X(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)(
+ 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;
+}