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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_mean */
static t_class *mtx_mean_class;
static void mtx_mean_matrix(t_matrix *x, t_symbol *s, int argc, t_atom *argv)
{
int row=atom_getfloat(argv++);
int col=atom_getfloat(argv++);
t_atom *ip, *op;
int c=col, r;
t_float sum;
t_float factor=1./row;
adjustsize(x, 1, col);
op=x->atombuffer;
while(c--){
sum=0;
ip=argv+col-c-1;
r=row;
while(r--)sum+=atom_getfloat(ip+col*r);
SETFLOAT(op, sum*factor);
op++;
}
outlet_list(x->x_obj.ob_outlet, gensym("row"), col, x->atombuffer);
}
static void *mtx_mean_new(void)
{
t_matrix *x = (t_matrix *)pd_new(mtx_mean_class);
outlet_new(&x->x_obj, 0);
x->col=x->row=0;
x->atombuffer=0;
return (x);
}
void mtx_mean_setup(void)
{
mtx_mean_class = class_new(gensym("mtx_mean"), (t_newmethod)mtx_mean_new,
(t_method)matrix_free, sizeof(t_matrix), 0, 0, 0);
class_addmethod(mtx_mean_class, (t_method)mtx_mean_matrix, gensym("matrix"), A_GIMME, 0);
}
void iemtx_mean_setup(void)
{
mtx_mean_setup();
}
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