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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/frc_3.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/frc_3.c')
| -rw-r--r-- | sndobj/rfftw/frc_3.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/sndobj/rfftw/frc_3.c b/sndobj/rfftw/frc_3.c new file mode 100644 index 0000000..c7ed409 --- /dev/null +++ b/sndobj/rfftw/frc_3.c @@ -0,0 +1,69 @@ +/*
+ * 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 20:43:53 EST 1999 */
+
+#include <fftw-int.h>
+#include <fftw.h>
+
+/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -real2hc 3 */
+
+/*
+ * This function contains 4 FP additions, 2 FP multiplications,
+ * (or, 3 additions, 1 multiplications, 1 fused multiply/add),
+ * 4 stack variables, and 6 memory accesses
+ */
+static const fftw_real K866025403 = FFTW_KONST(+0.866025403784438646763723170752936183471402627);
+static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000);
+
+/*
+ * Generator Id's :
+ * $Id: frc_3.c,v 1.1.1.1 2006/05/12 15:14:48 veplaini Exp $
+ * $Id: frc_3.c,v 1.1.1.1 2006/05/12 15:14:48 veplaini Exp $
+ * $Id: frc_3.c,v 1.1.1.1 2006/05/12 15:14:48 veplaini Exp $
+ */
+
+void fftw_real2hc_3(const fftw_real *input, fftw_real *real_output, fftw_real *imag_output, int istride, int real_ostride, int imag_ostride)
+{
+ fftw_real tmp1;
+ fftw_real tmp2;
+ fftw_real tmp3;
+ fftw_real tmp4;
+ ASSERT_ALIGNED_DOUBLE;
+ tmp1 = input[0];
+ tmp2 = input[istride];
+ tmp3 = input[2 * istride];
+ tmp4 = tmp2 + tmp3;
+ real_output[real_ostride] = tmp1 - (K500000000 * tmp4);
+ real_output[0] = tmp1 + tmp4;
+ imag_output[imag_ostride] = K866025403 * (tmp3 - tmp2);
+}
+
+fftw_codelet_desc fftw_real2hc_3_desc =
+{
+ "fftw_real2hc_3",
+ (void (*)()) fftw_real2hc_3,
+ 3,
+ FFTW_FORWARD,
+ FFTW_REAL2HC,
+ 68,
+ 0,
+ (const int *) 0,
+};
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