This commit was generated by cvs2svn to compensate for changes in r2637,svn2git-root

which included commits to RCS files with non-trunk default branches.

svn path=/trunk/externals/iem/iemmatrix/; revision=2638

1 files changed, 57 insertions, 0 deletions

diff --git a/src/mtx_trace.c b/src/mtx_trace.c
new file mode 100644
index 0000000..ba5b3db
--- /dev/null
+++ b/src/mtx_trace.c
@@ -0,0 +1,57 @@
+/*
+ *  iemmatrix
+ *
+ *  objects for manipulating simple matrices
+ *  mostly refering to matlab/octave matrix functions
+ *
+ * (c) IOhannes m zmölnig, forum::für::umläute
+ * 
+ * IEM, Graz
+ *
+ * this code is published under the LGPL
+ *
+ */
+#include "iemmatrix.h"
+
+/* mtx_trace */
+static t_class *mtx_trace_class;
+typedef struct _mtx_trace
+{
+  t_object x_obj;
+  t_float trace;
+} t_mtx_trace;
+static void mtx_trace_bang(t_mtx_trace *x)
+{
+  outlet_float(x->x_obj.ob_outlet, x->trace);
+}
+static void mtx_trace_matrix(t_mtx_trace *x, t_symbol *s, int argc, t_atom *argv)
+{
+  int row=atom_getfloat(argv++);
+  int col=atom_getfloat(argv++);
+  int length=(col<row)?col:row;
+  t_float trace = 0;
+  if(row*col>argc-2)post("mtx_trace: sparse matrices not yet supported : use \"mtx_check\"");
+  else while(length--)trace+=atom_getfloat(argv+length*(col+1));
+  x->trace=trace;
+  mtx_trace_bang(x);
+}
+static void *mtx_trace_new(t_symbol *s, int argc, t_atom *argv)
+{
+  t_mtx_trace *x = (t_mtx_trace *)pd_new(mtx_trace_class);
+  outlet_new(&x->x_obj, 0);
+  x->trace=0;
+  return (x);
+}
+void mtx_trace_setup(void)
+{
+  mtx_trace_class = class_new(gensym("mtx_trace"), (t_newmethod)mtx_trace_new, 
+			      0, sizeof(t_mtx_trace), 0, A_GIMME, 0);
+  class_addbang  (mtx_trace_class, mtx_trace_bang);
+  class_addmethod(mtx_trace_class, (t_method)mtx_trace_matrix, gensym("matrix"), A_GIMME, 0);
+  class_sethelpsymbol(mtx_trace_class, gensym("iemmatrix/mtx_trace"));
+}
+
+void iemtx_trace_setup(void)
+{
+  mtx_trace_setup();
+}