1 files changed, 45 insertions, 0 deletions
diff --git a/src/fftw3/kernel/trig.c b/src/fftw3/kernel/trig.c
new file mode 100644
index 0000000..0d4c3b2
--- /dev/null
+++ b/src/fftw3/kernel/trig.c
@@ -0,0 +1,45 @@
+/*
+ * 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
+ *
+ */
+
+/* $Id: trig.c,v 1.1 2008/10/17 06:11:29 scuri Exp $ */
+
+/* trigonometric functions */
+#include "ifftw.h"
+#include <math.h>
+
+trigreal X(cos2pi)(int m, int n)
+{
+     return X(sincos)((trigreal)m, (trigreal)n, 0);
+}
+
+trigreal X(sin2pi)(int m, int n)
+{
+     return X(sincos)((trigreal)m, (trigreal)n, 1);
+}
+
+trigreal X(tan2pi)(int m, int n)
+{
+#if 0      /* unimplemented, unused */
+     trigreal dm = m, dn = n;
+     return TAN(by2pi(dm, dn));
+#endif
+     UNUSED(m); UNUSED(n);
+     return 0.0;
+}