From 2b60d55c919e7588f5aff15936e83c300b3660bb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?IOhannes=20m=20zm=C3=B6lnig?=
 <zmoelnig@users.sourceforge.net>
Date: Tue, 22 Mar 2005 20:58:25 +0000
Subject: zexy-2.0: - use of abstractions for objects that allow it - some
 objects are build both as externals and abstractions (as slower fallbacks) -
 code-layout is now 1:1 c-file<->object (this should allow for building of
 zexy as  a collection of externals instead as a big library) - matrix-objects
 have moved to iemmatrix !!

svn path=/trunk/externals/zexy/; revision=2641
---
 src/dot.c | 162 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 162 insertions(+)
 create mode 100644 src/dot.c

(limited to 'src/dot.c')

diff --git a/src/dot.c b/src/dot.c
new file mode 100644
index 0000000..df0ec5c
--- /dev/null
+++ b/src/dot.c
@@ -0,0 +1,162 @@
+/******************************************************
+ *
+ * zexy - implementation file
+ *
+ * copyleft (c) IOhannes m zmölnig
+ *
+ *   1999:forum::für::umläute:2004
+ *
+ *   institute of electronic music and acoustics (iem)
+ *
+ ******************************************************
+ *
+ * license: GNU General Public License v.2
+ *
+ ******************************************************/
+
+/* 2305:forum::für::umläute:2001 */
+
+/*skalar multiplikation */
+
+
+#include "zexy.h"
+
+static t_class *scalmul_class;
+static t_class *scalmul_scal_class;
+
+typedef struct _scalmul
+{
+  t_object x_obj;
+
+  t_int n1, n2;
+
+  t_float *buf1, *buf2;
+
+  t_float f;
+} t_scalmul;
+
+
+static void scalmul_lst2(t_scalmul *x, t_symbol *s, int argc, t_atom *argv)
+{
+  t_float *fp;
+  if (x->n2 != argc) {
+    freebytes(x->buf2, x->n2 * sizeof(t_float));
+    x->n2 = argc;
+    x->buf2=(t_float *)getbytes(sizeof(t_float)*x->n2);
+  };
+  fp = x->buf2;
+  while(argc--)*fp++=atom_getfloat(argv++);
+}
+
+static void scalmul_lst(t_scalmul *x, t_symbol *s, int argc, t_atom *argv)
+{
+  t_float *fp;
+  t_atom  *ap;
+  int n;
+
+  if (argc){
+    if (x->n1 != argc) {
+      freebytes(x->buf1, x->n1 * sizeof(t_float));
+      x->n1 = argc;
+      x->buf1=(t_float *)getbytes(sizeof(t_float)*x->n1);
+    };
+    fp = x->buf1;
+    while(argc--)*fp++=atom_getfloat(argv++);
+  }
+
+  if (x->n1*x->n2==1){
+    outlet_float(x->x_obj.ob_outlet, *x->buf1**x->buf2);
+    return;
+  }
+  if (x->n1==1){
+    t_atom *a;
+    int i = x->n2;
+    t_float f = *x->buf1;
+    fp = x->buf2;
+    n = x->n2;
+    ap = (t_atom *)getbytes(sizeof(t_atom)*n);
+    a = ap;
+    while(i--){
+      SETFLOAT(a, *fp++*f);
+      a++;
+    }
+  } else if (x->n2==1){
+    t_float f = *x->buf2;
+    t_atom *a;
+    int i = x->n1;
+    n = x->n1;
+    ap = (t_atom *)getbytes(sizeof(t_atom)*n);
+    a = ap;
+    fp = x->buf1;
+    while(i--){
+      SETFLOAT(a, *fp++*f);
+      a++;
+    }
+  } else {
+    t_atom *a;
+    int i;
+    t_float *fp2=x->buf2;
+    fp = x->buf1;
+    n = x->n1;
+    if (x->n1!=x->n2){
+      post("scalar multiplication: truncating vectors to the same length");
+      if (x->n2<x->n1)n=x->n2;
+    }
+    ap = (t_atom *)getbytes(sizeof(t_atom)*n);
+    a = ap;
+    i=n;
+    while(i--){
+      SETFLOAT(a, *fp++**fp2++);
+      a++;
+    }
+  }
+  outlet_list(x->x_obj.ob_outlet, gensym("list"), n, ap);
+  freebytes(ap, sizeof(t_atom)*n);
+}
+static void scalmul_free(t_scalmul *x)
+{
+  freebytes(x->buf1, sizeof(t_float)*x->n1);
+  freebytes(x->buf2, sizeof(t_float)*x->n2);
+}
+
+static void *scalmul_new(t_symbol *s, int argc, t_atom *argv)
+{
+  t_scalmul *x;
+
+  if (argc-1){
+    x = (t_scalmul *)pd_new(scalmul_class);
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("list"), gensym(""));
+  } else x = (t_scalmul *)pd_new(scalmul_scal_class);
+
+  outlet_new(&x->x_obj, 0);
+
+  x->n1   =1;
+  x->buf1 =(t_float*)getbytes(sizeof(t_float));
+  *x->buf1=0;
+
+  if (argc)scalmul_lst2(x, gensym("list"), argc, argv);
+  else {
+    x->n2   =1;
+    x->buf2 =(t_float*)getbytes(sizeof(t_float));
+    *x->buf2=0;
+  }
+
+  if (argc==1)floatinlet_new(&x->x_obj, x->buf2);
+
+  return (x);
+}
+
+void dot_setup(void)
+{
+  scalmul_class = class_new(gensym("."), (t_newmethod)scalmul_new, 
+			    (t_method)scalmul_free, sizeof(t_scalmul), 0, A_GIMME, 0);
+  class_addlist(scalmul_class, scalmul_lst);
+  class_addmethod  (scalmul_class, (t_method)scalmul_lst2, gensym(""), A_GIMME, 0);
+  scalmul_scal_class = class_new(gensym("."), 0, (t_method)scalmul_free, 
+				 sizeof(t_scalmul), 0, 0);
+  class_addlist(scalmul_scal_class, scalmul_lst);
+
+  class_sethelpsymbol(scalmul_class, gensym("zexy/scalarmult"));
+  class_sethelpsymbol(scalmul_scal_class, gensym("zexy/scalarmult"));
+  zexy_register(".");
+}
-- 
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