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| author | John Glover <glover.john@gmail.com> | 2010-10-18 17:32:05 +0100 |
|---|---|---|
| committer | John Glover <glover.john@gmail.com> | 2010-10-18 17:32:05 +0100 |
| commit | 30755b92afeae5a5a32860b4f4297180f6d3398d (patch) | |
| tree | c9332a65adc6a27016678fccee6ce979d87fed07 /sndobj/rfftw/ftw_2.c | |
| parent | 58a7c36c5a219d8306f276db157097ac30782079 (diff) | |
| download | simpl-30755b92afeae5a5a32860b4f4297180f6d3398d.tar.gz simpl-30755b92afeae5a5a32860b4f4297180f6d3398d.tar.bz2 simpl-30755b92afeae5a5a32860b4f4297180f6d3398d.zip | |
Moved project over to Git
Diffstat (limited to 'sndobj/rfftw/ftw_2.c')
| -rw-r--r-- | sndobj/rfftw/ftw_2.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/sndobj/rfftw/ftw_2.c b/sndobj/rfftw/ftw_2.c new file mode 100644 index 0000000..a103be2 --- /dev/null +++ b/sndobj/rfftw/ftw_2.c @@ -0,0 +1,86 @@ +/*
+ * Copyright (c) 1997-1999 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
+ *
+ */
+
+/* This file was automatically generated --- DO NOT EDIT */
+/* Generated on Sun Nov 7 20:44:30 EST 1999 */
+
+#include <fftw-int.h>
+#include <fftw.h>
+
+/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -twiddle 2 */
+
+/*
+ * This function contains 6 FP additions, 4 FP multiplications,
+ * (or, 4 additions, 2 multiplications, 2 fused multiply/add),
+ * 10 stack variables, and 8 memory accesses
+ */
+
+/*
+ * Generator Id's :
+ * $Id: ftw_2.c,v 1.1.1.1 2006/05/12 15:15:01 veplaini Exp $
+ * $Id: ftw_2.c,v 1.1.1.1 2006/05/12 15:15:01 veplaini Exp $
+ * $Id: ftw_2.c,v 1.1.1.1 2006/05/12 15:15:01 veplaini Exp $
+ */
+
+void fftw_twiddle_2(fftw_complex *A, const fftw_complex *W, int iostride, int m, int dist)
+{
+ int i;
+ fftw_complex *inout;
+ inout = A;
+ for (i = m; i > 0; i = i - 1, inout = inout + dist, W = W + 1) {
+ fftw_real tmp1;
+ fftw_real tmp8;
+ fftw_real tmp6;
+ fftw_real tmp7;
+ ASSERT_ALIGNED_DOUBLE;
+ tmp1 = c_re(inout[0]);
+ tmp8 = c_im(inout[0]);
+ {
+ fftw_real tmp3;
+ fftw_real tmp5;
+ fftw_real tmp2;
+ fftw_real tmp4;
+ ASSERT_ALIGNED_DOUBLE;
+ tmp3 = c_re(inout[iostride]);
+ tmp5 = c_im(inout[iostride]);
+ tmp2 = c_re(W[0]);
+ tmp4 = c_im(W[0]);
+ tmp6 = (tmp2 * tmp3) - (tmp4 * tmp5);
+ tmp7 = (tmp4 * tmp3) + (tmp2 * tmp5);
+ }
+ c_re(inout[iostride]) = tmp1 - tmp6;
+ c_re(inout[0]) = tmp1 + tmp6;
+ c_im(inout[0]) = tmp7 + tmp8;
+ c_im(inout[iostride]) = tmp8 - tmp7;
+ }
+}
+
+static const int twiddle_order[] =
+{1};
+fftw_codelet_desc fftw_twiddle_2_desc =
+{
+ "fftw_twiddle_2",
+ (void (*)()) fftw_twiddle_2,
+ 2,
+ FFTW_FORWARD,
+ FFTW_TWIDDLE,
+ 44,
+ 1,
+ twiddle_order,
+};
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