split out d_math.c into standalone objects

svn path=/trunk/; revision=12736

1 files changed, 47 insertions, 0 deletions

diff --git a/externals/vanilla/ftom~.c b/externals/vanilla/ftom~.c
new file mode 100644
index 00000000..cfc63595
--- /dev/null
+++ b/externals/vanilla/ftom~.c
@@ -0,0 +1,47 @@
+/* Copyright (c) 1997-2001 Miller Puckette and others.
+* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */
+
+#include "m_pd.h"
+#include <math.h>
+
+typedef struct ftom_tilde
+{
+    t_object x_obj;
+    t_float x_f;
+} t_ftom_tilde;
+
+t_class *ftom_tilde_class;
+
+static void *ftom_tilde_new(void)
+{
+    t_ftom_tilde *x = (t_ftom_tilde *)pd_new(ftom_tilde_class);
+    outlet_new(&x->x_obj, gensym("signal"));
+    x->x_f = 0;
+    return (x);
+}
+
+static t_int *ftom_tilde_perform(t_int *w)
+{
+    t_sample *in = *(t_sample **)(w+1), *out = *(t_sample **)(w+2);
+    t_int n = *(t_int *)(w+3);
+    for (; n--; *in++, out++)
+    {
+        t_sample f = *in;
+        *out = (f > 0 ? 17.3123405046 * log(.12231220585 * f) : -1500);
+    }
+    return (w + 4);
+}
+
+static void ftom_tilde_dsp(t_ftom_tilde *x, t_signal **sp)
+{
+    dsp_add(ftom_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+void ftom_tilde_setup(void)
+{
+    ftom_tilde_class = class_new(gensym("ftom~"), (t_newmethod)ftom_tilde_new, 0,
+        sizeof(t_ftom_tilde), 0, 0);
+    CLASS_MAINSIGNALIN(ftom_tilde_class, t_ftom_tilde, x_f);
+    class_addmethod(ftom_tilde_class, (t_method)ftom_tilde_dsp, gensym("dsp"), 0);
+}