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/*
* iemmatrix
*
* objects for manipulating simple matrices
* mostly refering to matlab/octave matrix functions
*
* (c) IOhannes m zmölnig, forum::für::umläute
*
* IEM, Graz
*
* this code is published under the LGPL
*
*/
#include "iemmatrix.h"
/* mtx_roll */
/* roll the rows */
static t_class *mtx_roll_class;
static void mtx_roll_matrix(t_matrix *x, t_symbol *s, int argc, t_atom *argv)
{
int row=atom_getfloat(argv++);
int col=atom_getfloat(argv++);
t_atom *ap;
int colroll = ((int)x->f%col+col)%col;
int c;
if(row*col>argc-2) {
post("mtx_roll: sparse matrices not yet supported : use \"mtx_check\"");
return;
}
adjustsize(x, row, col);
ap = x->atombuffer+2;
c=col;
while(c--){
t_atom *in = argv+col-c-1;
t_atom *out = ap +(col-c-1+colroll)%col;
int r = row;
while (r--){
SETFLOAT(out, atom_getfloat(in));
out+=col;
in+=col;
}
}
matrix_bang(x);
}
static void *mtx_roll_new(t_symbol *s, int argc, t_atom *argv)
{
t_matrix *x = (t_matrix *)pd_new(mtx_roll_class);
floatinlet_new(&x->x_obj, &(x->f));
outlet_new(&x->x_obj, 0);
x->f=argc?atom_getfloat(argv):0;
x->col=x->row=0;
x->atombuffer=0;
return (x);
}
void mtx_roll_setup(void)
{
mtx_roll_class = class_new(gensym("mtx_roll"), (t_newmethod)mtx_roll_new,
(t_method)matrix_free, sizeof(t_matrix), 0, A_GIMME, 0);
class_addbang (mtx_roll_class, matrix_bang);
class_addmethod(mtx_roll_class, (t_method)mtx_roll_matrix, gensym("matrix"), A_GIMME, 0);
class_sethelpsymbol(mtx_roll_class, gensym("iemmatrix/mtx_transpose"));
}
void iemtx_roll_setup(void){
mtx_roll_setup();
}
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