comparison src/fftw-3.3.3/api/plan-many-dft-r2c.c @ 10:37bf6b4a2645

Add FFTW3

+/*
+ * 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_r2c)(int rank, const int *n,
+			     int howmany,
+			     R *in, const int *inembed,
+			     int istride, int idist,
+			     C *out, const int *onembed,
+			     int ostride, int odist, unsigned flags)
+{
+     R *ro, *io;
+     int *nfi, *nfo;
+     int inplace;
+     X(plan) p;
+
+     if (!X(many_kosherp)(rank, n, howmany)) return 0;
+
+     EXTRACT_REIM(FFT_SIGN, out, &ro, &io);
+     inplace = in == ro;
+
+     p = X(mkapiplan)(
+	  0, flags, 
+	  X(mkproblem_rdft2_d_3pointers)(
+	       X(mktensor_rowmajor)(
+		    rank, n,
+		    X(rdft2_pad)(rank, n, inembed, inplace, 0, &nfi),
+		    X(rdft2_pad)(rank, n, onembed, inplace, 1, &nfo),
+		    istride, 2 * ostride), 
+	       X(mktensor_1d)(howmany, idist, 2 * odist),
+	       TAINT_UNALIGNED(in, flags),
+	       TAINT_UNALIGNED(ro, flags), TAINT_UNALIGNED(io, flags),
+	       R2HC));
+
+     X(ifree0)(nfi);
+     X(ifree0)(nfo);
+     return p;
+}