1 files changed, 49 insertions, 0 deletions
diff --git a/source/vftom.c b/source/vftom.c
new file mode 100644
index 0000000..6355006
--- /dev/null
+++ b/source/vftom.c
@@ -0,0 +1,49 @@
+#include "defines.h"
+
+/*--------------- vftom ----------------*/
+
+static t_class *vftom_class;
+
+typedef struct _vftom
+{
+    t_object x_obj;
+} t_vftom;
+
+float ftom(float f)
+{
+    return (float)(f > 0 ? 17.3123405046 * log(.12231220585 * f) : -1500);
+}
+
+static void vftom_perform(t_vftom *x, t_symbol *s, int argc, t_atom *argv)
+{
+	int i;
+	t_atom *ap,*app;
+    ap = (t_atom *)getbytes(sizeof(t_atom)*argc);
+	app=ap;
+
+	for (i = 0; i < argc; i++)
+	{
+		SETFLOAT(app, ftom(atom_getfloat(argv++)));
+		app++;
+	}
+	outlet_list(x->x_obj.ob_outlet,gensym("list"),argc,ap);
+    freebytes(ap,argc);
+}
+
+static void *vftom_new()
+{
+	t_vftom *x=(t_vftom *)pd_new(vftom_class);
+	outlet_new(&x->x_obj, gensym("list"));
+	return (void *)x;
+}
+
+void vftom_setup(void)
+{
+    vftom_class = class_new(gensym("vftom"),
+    	(t_newmethod)vftom_new, 0,
+		sizeof(t_vftom), 
+		CLASS_DEFAULT,
+	    0);
+    class_addlist(vftom_class, (t_method)vftom_perform);
+}
+