First commit - moving from LuaForge to SourceForge

1 files changed, 31 insertions, 0 deletions

diff --git a/src/fftw3/kernel/kct.c b/src/fftw3/kernel/kct.c
new file mode 100644
index 0000000..ba3bf68
--- /dev/null
+++ b/src/fftw3/kernel/kct.c
@@ -0,0 +1,31 @@
+/*
+ * 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
+ *
+ */
+
+/* common routines for Cooley-Tukey algorithms */
+
+#include "ifftw.h"
+
+#define POW2P(n) (((n) > 0) && (((n) & ((n) - 1)) == 0))
+
+/* TRUE if radix-r is ugly for size n */
+int X(ct_uglyp)(int min_n, int n, int r)
+{
+     return (n <= min_n) || (POW2P(n) && (n / r) <= 4);
+}