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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_log: B=log(A); B[n,m]=e^A[n,m] */
static t_class *mtx_log_class;
static void mtx_log_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;
int n = argc-2;
if (argc<2){ post("mtx_log: crippled matrix"); return; }
if ((col<1)||(row<1)) { post("mtx_log: invalid dimensions"); return; }
if (col*row>argc-2){ post("sparse matrix not yet supported : use \"mtx_check\""); return; }
adjustsize(&x->m, row, col);
m = x->m.atombuffer+2;
while(n--){
t_float f = (t_float)log(atom_getfloat(argv++));
SETFLOAT(m, f);
m++;
}
outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, x->m.atombuffer);
}
static void mtx_log_list(t_mtx_binscalar *x, t_symbol *s, int argc, t_atom *argv)
{
int n=argc;
t_atom *m;
adjustsize(&x->m, 1, argc);
m = x->m.atombuffer;
while(n--){
m->a_type = A_FLOAT;
(m++)->a_w.w_float = (t_float)log(atom_getfloat(argv++));
}
outlet_list(x->x_obj.ob_outlet, gensym("list"), argc, x->m.atombuffer);
}
static void *mtx_log_new(t_symbol *s)
{
/* element log */
t_matrix *x = (t_matrix *)pd_new(mtx_log_class);
outlet_new(&x->x_obj, 0);
x->col = x->row = 0;
x->atombuffer = 0;
return(x);
}
void mtx_log_setup(void)
{
mtx_log_class = class_new(gensym("mtx_log"), (t_newmethod)mtx_log_new, (t_method)mtx_binmtx_free,
sizeof(t_mtx_binmtx), 0, A_GIMME, 0);
class_addmethod(mtx_log_class, (t_method)mtx_log_matrix, gensym("matrix"), A_GIMME, 0);
class_addlist (mtx_log_class, mtx_log_list);
class_addbang (mtx_log_class, mtx_binmtx_bang);
}
void iemtx_log_setup(void)
{
mtx_log_setup();
}
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