1 files changed, 61 insertions, 0 deletions
diff --git a/modules/fwarp.c b/modules/fwarp.c
new file mode 100644
index 0000000..28fe024
--- /dev/null
+++ b/modules/fwarp.c
@@ -0,0 +1,61 @@
+/*
+ *   fwarp.c  - converts a frequency to a "standard" tangent warped freq
+ *   Copyright (c) 2000-2003 by Tom Schouten
+ *
+ *   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+#include "m_pd.h"
+#include <math.h>
+
+#define SEQL 16
+
+ 
+typedef struct fwarp
+{
+  t_object t_ob;
+  t_outlet *x_out;
+} t_fwarp;
+
+static void fwarp_float(t_fwarp *x, t_floatarg f)
+{
+    float twopi = 2.0f * M_PI;
+    float sr = sys_getsr();
+    f /= sr;
+    f = tan(twopi * f) / twopi;
+    outlet_float(x->x_out, f * sr);
+}
+
+static void fwarp_free(void)
+{
+}
+
+t_class *fwarp_class;
+
+static void *fwarp_new(void)
+{
+    t_fwarp *x = (t_fwarp *)pd_new(fwarp_class);
+    x->x_out = outlet_new(&x->t_ob, gensym("float"));
+    return (void *)x;
+}
+
+void fwarp_setup(void)
+{
+    fwarp_class = class_new(gensym("fwarp"), (t_newmethod)fwarp_new,
+    	(t_method)fwarp_free, sizeof(t_fwarp), 0, 0);
+    class_addfloat(fwarp_class, fwarp_float);
+}
+