1 files changed, 51 insertions, 0 deletions
diff --git a/source/vmtof.c b/source/vmtof.c
new file mode 100644
index 0000000..828dcb6
--- /dev/null
+++ b/source/vmtof.c
@@ -0,0 +1,51 @@
+#include "defines.h"
+
+/*--------------- vmtof ----------------*/
+
+static t_class *vmtof_class;
+
+typedef struct _vmtof
+{
+    t_object x_obj;
+} t_vmtof;
+
+float mtof(float f)
+{
+    if (f <= -1500) return(0);
+    else if (f > 1499) return(mtof(1499));
+    else return (float)(8.17579891564 * exp(.0577622650 * f));
+}
+
+static void vmtof_perform(t_vmtof *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, mtof(atom_getfloat(argv++)));
+		app++;
+	}
+	outlet_list(x->x_obj.ob_outlet,gensym("list"),argc,ap);
+    freebytes(ap,argc);
+}
+
+static void *vmtof_new()
+{
+	t_vmtof *x=(t_vmtof *)pd_new(vmtof_class);
+	outlet_new(&x->x_obj, gensym("list"));
+	return (void *)x;
+}
+
+void vmtof_setup(void)
+{
+    vmtof_class = class_new(gensym("vmtof"),
+    	(t_newmethod)vmtof_new, 0,
+		sizeof(t_vmtof), 
+		CLASS_DEFAULT,
+	    0);
+    class_addlist(vmtof_class, (t_method)vmtof_perform);
+}
+