split out d_math.c into standalone objects

svn path=/trunk/; revision=12736

1 files changed, 53 insertions, 0 deletions

diff --git a/externals/vanilla/wrap~.c b/externals/vanilla/wrap~.c
new file mode 100644
index 00000000..ef7137ab
--- /dev/null
+++ b/externals/vanilla/wrap~.c
@@ -0,0 +1,53 @@
+/* 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.  */
+
+/*  mathematical functions and other transfer functions, including tilde
+    versions of stuff from x_acoustics.c.
+*/
+
+#include "m_pd.h"
+#include <math.h>
+
+typedef struct wrap
+{
+    t_object x_obj;
+    t_float x_f;
+} t_sigwrap;
+
+t_class *sigwrap_class;
+
+static void *sigwrap_new(void)
+{
+    t_sigwrap *x = (t_sigwrap *)pd_new(sigwrap_class);
+    outlet_new(&x->x_obj, gensym("signal"));
+    x->x_f = 0;
+    return (x);
+}
+
+static t_int *sigwrap_perform(t_int *w)
+{
+    t_sample *in = *(t_sample **)(w+1), *out = *(t_sample **)(w+2);
+    t_int n = *(t_int *)(w+3);
+    while (n--)
+    {   
+        t_sample f = *in++;
+        int k = f;
+        if (f > 0) *out++ = f-k;
+        else *out++ = f - (k-1);
+    }
+    return (w + 4);
+}
+
+static void sigwrap_dsp(t_sigwrap *x, t_signal **sp)
+{
+    dsp_add(sigwrap_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+void wrap_tilde_setup(void)
+{
+    sigwrap_class = class_new(gensym("wrap~"), (t_newmethod)sigwrap_new, 0,
+        sizeof(t_sigwrap), 0, 0);
+    CLASS_MAINSIGNALIN(sigwrap_class, t_sigwrap, x_f);
+    class_addmethod(sigwrap_class, (t_method)sigwrap_dsp, gensym("dsp"), 0);
+}