aboutsummaryrefslogtreecommitdiff
path: root/src/mtx_pow.c
diff options
context:
space:
mode:
authorIOhannes m zmölnig <zmoelnig@users.sourceforge.net>2005-05-11 13:05:29 +0000
committerIOhannes m zmölnig <zmoelnig@users.sourceforge.net>2005-05-11 13:05:29 +0000
commitc74f9041a42d95190b88990e91c2587f2f57a056 (patch)
tree5679242a76c8f8a0fc59fcc044c97c01b6713471 /src/mtx_pow.c
parentf4299cb7e6a5e161aa16670acd33de1ef75fae4d (diff)
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
Diffstat (limited to 'src/mtx_pow.c')
-rw-r--r--src/mtx_pow.c163
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 zmlnig, forum::fr::umlute
+ * 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();
+}