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/*
* 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_prod */
/* column-wise product
*/
static t_class *mtx_prod_class;
static void mtx_prod_matrix(t_matrix *x, t_symbol *s, int argc, t_atom *argv)
{
int row=atom_getfloat(argv++);
int col=atom_getfloat(argv++);
int n;
if(row*col>argc-2)post("mtx_prod: sparse matrices not yet supported : use \"mtx_check\"");
else {
t_atom *ap = (t_atom *)getbytes(col * sizeof(t_atom)), *dummy=ap;
for(n=0;n<col;n++, dummy++){
int i=row;
t_float f=1.f;
t_atom*ap2=argv+n;
while(i--){
f*=atom_getfloat(ap2+col*i);
}
SETFLOAT(dummy, f);
}
outlet_list(x->x_obj.ob_outlet, gensym("prod"), col, ap);
freebytes(ap, (col * sizeof(t_atom)));
}
}
static void mtx_prod_list(t_matrix *x, t_symbol *s, int argc, t_atom *argv){
t_float f=1.f;
while(argc--)f*=atom_getfloat(argv++);
outlet_float(x->x_obj.ob_outlet, f);
}
static void *mtx_prod_new(void)
{
t_matrix *x = (t_matrix *)pd_new(mtx_prod_class);
outlet_new(&x->x_obj, 0);
x->row = x->col = 0;
x->atombuffer = 0;
return (x);
}
void mtx_prod_setup(void)
{
mtx_prod_class = class_new(gensym("mtx_prod"), (t_newmethod)mtx_prod_new,
(t_method)matrix_free, sizeof(t_matrix), 0, A_GIMME, 0);
class_addlist (mtx_prod_class, mtx_prod_list);
class_addmethod(mtx_prod_class, (t_method)mtx_prod_matrix, gensym("matrix"), A_GIMME, 0);
}
void iemtx_prod_setup(void){
mtx_prod_setup();
}
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