/*
 *  iemmatrix
 *
 *  objects for manipulating simple matrices
 *  mostly referring 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_matrixobj *x, t_symbol *s, int argc,
                            t_atom *argv)
{
  int row=atom_getfloat(argv++);
  int col=atom_getfloat(argv++);
  int n;
  (void)s; /* unused */

  if(row*col>argc-2) {
    pd_error(x, "[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_matrixobj *x, t_symbol *s, int argc, t_atom *argv)
{
  t_float f=1.f;
  (void)s; /* unused */
  while(argc--) {
    f*=atom_getfloat(argv++);
  }
  outlet_float(x->x_obj.ob_outlet, f);
}


static void *mtx_prod_new(void)
{
  t_matrixobj *x = (t_matrixobj *)pd_new(mtx_prod_class);
  outlet_new(&x->x_obj, 0);

  return (x);
}
void mtx_prod_setup(void)
{
  mtx_prod_class = class_new(gensym("mtx_prod"), (t_newmethod)mtx_prod_new,
                             (t_method)matrixobj_free, sizeof(t_matrixobj), 0, 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();
}
