an object to test for equality of matrices

svn path=/trunk/externals/iem/iemmatrix/; revision=9116

1 files changed, 153 insertions, 0 deletions

diff --git a/src/mtx_isequal.c b/src/mtx_isequal.c
new file mode 100644
index 0000000..ded85c7
--- /dev/null
+++ b/src/mtx_isequal.c
@@ -0,0 +1,153 @@
+/*
+ *  iemmatrix
+ *
+ *  objects for manipulating simple matrices
+ *  mostly refering to matlab/octave matrix functions
+ *
+ * Copyright (c) IOhannes m zmölnig, forum::für::umläute
+ * IEM, Graz, Austria
+ *
+ * For information on usage and redistribution, and for a DISCLAIMER OF ALL
+ * WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+ *
+ */
+#include "iemmatrix.h"
+
+/*
+  mtx_isequal
+*/
+
+/* mtx_isequal */
+static t_class *mtx_isequal_class, *mtx_isequalscalar_class;
+
+static void mtx_isequalscalar_matrix(t_mtx_binscalar *x, t_symbol *s, int argc, t_atom *argv)
+{
+  int n=argc-2;
+  int row=atom_getfloat(argv), col=atom_getfloat(argv+1);
+  
+  t_float offset=x->f;
+  t_atom *buf;
+  t_atom *ap=argv+2;
+
+  if(argc<2){post("mtx_isequal: crippled matrix");return; }
+
+  while(n--){
+    if(atom_getfloat(ap)!=offset) {
+      outlet_float(x->x_obj.ob_outlet, (t_float)0);
+      return;
+    }
+    ap++;
+  }
+  outlet_float(x->x_obj.ob_outlet, (t_float)1);
+}
+static void mtx_isequalscalar_list(t_mtx_binscalar *x, t_symbol *s, int argc, t_atom *argv)
+{
+  int n=argc;
+  t_atom *ap=argv;
+  t_float offset = x->f;
+
+  while(n--){
+    if(atom_getfloat(ap)!=offset) {
+      outlet_float(x->x_obj.ob_outlet, (t_float)0);
+      return;
+    }
+    ap++;
+  }
+  outlet_float(x->x_obj.ob_outlet, (t_float)1);
+}
+
+static void mtx_isequal_matrix(t_mtx_binmtx *x, t_symbol *s, int argc, t_atom *argv)
+{
+  int row=atom_getfloat(argv);
+  int col=atom_getfloat(argv+1);
+  t_atom *m;
+  t_atom *m1 = argv+2;
+  t_atom *m2 = x->m2.atombuffer+2;
+  int n = argc-2;
+
+  if (argc<2){    post("mtx_isequal: crippled matrix");    return;  }
+  if ((col<1)||(row<1)) {    post("mtx_isequal: invalid dimensions");    return;  }
+  if (col*row>argc-2){    post("sparse matrix not yet supported : use \"mtx_check\"");    return;  }
+
+  if ((col!=x->m2.col)||(row!=x->m2.row)){
+    outlet_float(x->x_obj.ob_outlet, (t_float)0);
+    return;
+  }
+
+  while(n--){
+    if(atom_getfloat(m1++)!=atom_getfloat(m2++)) {
+      outlet_float(x->x_obj.ob_outlet, (t_float)0);
+      return;
+    }
+  }
+  
+  outlet_float(x->x_obj.ob_outlet, (t_float)1);
+}
+static void mtx_isequal_float(t_mtx_binmtx *x, t_float f)
+{
+  t_matrix *m=&x->m, *m2=&x->m2;
+  t_atom *ap=m2->atombuffer+2;
+  int row2, col2, n;
+
+  if (!m2->atombuffer){ 
+    outlet_float(x->x_obj.ob_outlet, (t_float)0);
+    return; 
+  }
+
+  row2=atom_getfloat(m2->atombuffer);
+  col2=atom_getfloat(m2->atombuffer+1);
+
+  n=row2*col2;
+
+
+  while(n--){
+    if(atom_getfloat(ap)!=f) {
+      outlet_float(x->x_obj.ob_outlet, (t_float)0);
+      return;
+    }
+    ap++;
+  }
+  outlet_float(x->x_obj.ob_outlet, (t_float)1);
+}
+static void *mtx_isequal_new(t_symbol *s, int argc, t_atom *argv)
+{
+  if (argc>1) post("mtx_isequal : extra arguments ignored");
+  if (argc) {
+    t_mtx_binscalar *x = (t_mtx_binscalar *)pd_new(mtx_isequalscalar_class);
+    floatinlet_new(&x->x_obj, &x->f);
+    x->f = atom_getfloatarg(0, argc, argv);
+    outlet_new(&x->x_obj, 0);
+    return(x);
+  } else {
+    t_mtx_binmtx *x = (t_mtx_binmtx *)pd_new(mtx_isequal_class);
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("matrix"), gensym(""));
+    outlet_new(&x->x_obj, 0);
+    x->m.col = x->m.row =  x->m2.col = x->m2.row = 0;
+    x->m.atombuffer = x->m2.atombuffer = 0;
+    return(x);
+  }
+}
+
+void mtx_isequal_setup(void)
+{
+  mtx_isequal_class = class_new(gensym("mtx_isequal"), (t_newmethod)mtx_isequal_new, (t_method)mtx_binmtx_free,
+                            sizeof(t_mtx_binmtx), 0, A_GIMME, 0);
+  class_addmethod(mtx_isequal_class, (t_method)mtx_isequal_matrix, gensym("matrix"), A_GIMME, 0);
+  class_addmethod(mtx_isequal_class, (t_method)mtx_bin_matrix2, gensym(""), A_GIMME, 0);
+  class_addfloat (mtx_isequal_class, mtx_isequal_float);
+  class_addbang  (mtx_isequal_class, mtx_binmtx_bang);
+
+  mtx_isequalscalar_class = class_new(gensym("mtx_isequal"), 0, (t_method)mtx_binscalar_free,
+                                  sizeof(t_mtx_binscalar), 0, 0);
+  class_addmethod(mtx_isequalscalar_class, (t_method)mtx_isequalscalar_matrix, gensym("matrix"), A_GIMME, 0);
+  class_addlist  (mtx_isequalscalar_class, mtx_isequalscalar_list);
+  class_addbang  (mtx_isequalscalar_class, mtx_binscalar_bang);
+
+
+
+}
+
+void iemtx_isequal_setup(void)
+{
+  mtx_isequal_setup();
+}