split the objects from mtx_binops into several files: mtx_add, mtx_sub, mtx_mul, mtx_pow

mtx_binops is still there for glue functions
exposed some important operations on float-arrays via iemmatrix.h (mtx_doInvert, mtx_doTranspose, mtx_doMultiply)
as you can easily see, they all start with "mtx_do" and a capital letter;
they all return a pointer to (newly allocated) memory with the result

svn path=/trunk/externals/iem/iemmatrix/; revision=2947

1 files changed, 163 insertions, 0 deletions

diff --git a/src/mtx_pow.c b/src/mtx_pow.c
new file mode 100644
index 0000000..f8b0212
--- /dev/null
+++ b/src/mtx_pow.c
@@ -0,0 +1,163 @@
+/*
+ *  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_.^ */
+/* LATER: do a mtx_pow, mtx_^ */
+
+#ifdef __APPLE__
+/* there is no such thing like powf on apple... */
+static inline float powf (float v, float p)
+{
+	return (float) pow((double)v, (double) p);
+}
+#endif /* __APPLE__ */
+
+static t_class *mtx_powelement_class, *mtx_powscalar_class;
+
+static void mtx_powelement_matrix(t_mtx_binmtx *x, t_symbol *s, int argc, t_atom *argv)
+{
+  int row=atom_getfloat(argv++);
+  int col=atom_getfloat(argv++);
+  t_atom *m;
+  t_atom *m2 = x->m2.atombuffer+2;
+  int n = argc-2;
+
+  if (argc<2){    post("mtx_pow: crippled matrix");    return;  }
+  if ((col<1)||(row<1)) {    post("mtx_pow: invalid dimensions");    return;  }
+  if (col*row>argc-2){    post("sparse matrix not yet supported : use \"mtx_check\"");    return;  }
+  if (!(x->m2.col*x->m2.row)) {
+    adjustsize(&x->m, row, col);
+    matrix_set(&x->m, 0);
+    outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, x->m.atombuffer);
+    return;
+  }
+  if ((col!=x->m2.col)||(row!=x->m2.row)){    post("matrix dimension do not match");    /* LATER SOLVE THIS */    return;  }
+
+  adjustsize(&x->m, row, col);
+  m =  x->m.atombuffer+2;
+
+  while(n--){
+    t_float f = powf(atom_getfloat(argv++),atom_getfloat(m2++));
+    SETFLOAT(m, f);
+    m++;
+  }
+
+  outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, x->m.atombuffer);
+}
+static void mtx_powelement_float(t_mtx_binmtx *x, t_float f)
+{
+  t_matrix *m=&x->m, *m2=&x->m2;
+  t_atom *ap, *ap2=m2->atombuffer+2;
+  int row2, col2, n;
+
+  if (!m2->atombuffer){ post("power by what ?");            return; }
+
+  row2=atom_getfloat(m2->atombuffer);
+  col2=atom_getfloat(m2->atombuffer+1);
+  adjustsize(m, row2, col2);
+  ap=m->atombuffer+2;
+
+  n=row2*col2;
+
+  while(n--){
+    SETFLOAT(ap, powf(f,atom_getfloat(ap2++)));
+    ap++;
+  }
+  
+  outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), m->row*m->col+2, m->atombuffer);
+}
+static void mtx_powscalar_matrix(t_mtx_binscalar *x, t_symbol *s, int argc, t_atom *argv)
+{
+  int n=argc-2;
+  t_atom *m;
+  t_float factor = x->f;
+  int row=atom_getfloat(argv++);
+  int col=atom_getfloat(argv++);
+
+  if (argc<2){
+    post("mtx_pow: crippled matrix");
+    return;
+  }
+  adjustsize(&x->m, row, col);
+  m = x->m.atombuffer+2;
+
+  while(n--){
+    m->a_type = A_FLOAT;
+    (m++)->a_w.w_float = powf(atom_getfloat(argv++),factor);
+  }
+
+  outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, x->m.atombuffer);
+}
+static void mtx_powscalar_list(t_mtx_binscalar *x, t_symbol *s, int argc, t_atom *argv)
+{
+  int n=argc;
+  t_atom *m;
+  t_float factor = x->f;
+
+  adjustsize(&x->m, 1, argc);
+  m = x->m.atombuffer;
+
+  while(n--){
+    m->a_type = A_FLOAT;
+    (m++)->a_w.w_float = powf(atom_getfloat(argv++),factor);
+  }
+
+  outlet_list(x->x_obj.ob_outlet, gensym("list"), argc, x->m.atombuffer);
+}
+
+static void *mtx_pow_new(t_symbol *s, int argc, t_atom *argv)
+{
+  if (argc>1) post("mtx_pow : extra arguments ignored");
+  if (argc) {
+    /* scalar powision */
+    t_mtx_binscalar *x = (t_mtx_binscalar *)pd_new(mtx_powscalar_class);
+    floatinlet_new(&x->x_obj, &x->f);
+    x->f = atom_getfloatarg(0, argc, argv);
+    outlet_new(&x->x_obj, 0);
+    return(x);
+  } else {
+    /* element powision */
+    t_matrix *x = (t_matrix *)pd_new(mtx_powelement_class);
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("matrix"), gensym(""));
+    outlet_new(&x->x_obj, 0);
+    x->col = x->row = 0;
+    x->atombuffer = 0;
+    return(x);
+  }
+}
+
+void mtx_pow_setup(void)
+{
+  mtx_powelement_class = class_new(gensym("mtx_.^"), (t_newmethod)mtx_pow_new, (t_method)mtx_binmtx_free,
+				   sizeof(t_mtx_binmtx), 0, A_GIMME, 0);
+  class_addmethod(mtx_powelement_class, (t_method)mtx_powelement_matrix, gensym("matrix"), A_GIMME, 0);
+  class_addmethod(mtx_powelement_class, (t_method)mtx_bin_matrix2, gensym(""), A_GIMME, 0);
+  class_addfloat (mtx_powelement_class, mtx_powelement_float);
+  class_addbang  (mtx_powelement_class, mtx_binmtx_bang);
+
+  mtx_powscalar_class = class_new(gensym("mtx_.^"), 0, (t_method)mtx_binscalar_free,
+				  sizeof(t_mtx_binscalar), 0, 0);
+  class_addmethod(mtx_powscalar_class, (t_method)mtx_powscalar_matrix, gensym("matrix"), A_GIMME, 0);
+  class_addlist  (mtx_powscalar_class, mtx_powscalar_list);
+  class_addbang  (mtx_powscalar_class, mtx_binscalar_bang);
+
+  class_sethelpsymbol(mtx_powelement_class, gensym("iemmatrix/mtx_binops"));
+  class_sethelpsymbol(mtx_powscalar_class, gensym("iemmatrix/mtx_binops"));
+}
+
+void iemtx_pow_setup(void)
+{
+  mtx_pow_setup();
+}