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/******************************************************
*
* zexy - implementation file
*
* copyleft (c) IOhannes m zmölnig
*
* 1999:forum::für::umläute:2004
*
* institute of electronic music and acoustics (iem)
*
******************************************************
*
* license: GNU General Public License v.2
*
******************************************************/
/* 2305:forum::für::umläute:2001 */
/*skalar multiplikation */
#include "zexy.h"
static t_class *scalmul_class;
static t_class *scalmul_scal_class;
typedef struct _scalmul
{
t_object x_obj;
t_int n1, n2;
t_float *buf1, *buf2;
t_float f;
} t_scalmul;
static void scalmul_lst2(t_scalmul *x, t_symbol *s, int argc, t_atom *argv)
{
t_float *fp;
ZEXY_USEVAR(s);
if (x->n2 != argc) {
freebytes(x->buf2, x->n2 * sizeof(t_float));
x->n2 = argc;
x->buf2=(t_float *)getbytes(sizeof(t_float)*x->n2);
};
fp = x->buf2;
while(argc--)*fp++=atom_getfloat(argv++);
}
static void scalmul_lst(t_scalmul *x, t_symbol *s, int argc, t_atom *argv)
{
t_float *fp;
t_atom *ap;
int n;
ZEXY_USEVAR(s);
if (argc){
if (x->n1 != argc) {
freebytes(x->buf1, x->n1 * sizeof(t_float));
x->n1 = argc;
x->buf1=(t_float *)getbytes(sizeof(t_float)*x->n1);
};
fp = x->buf1;
while(argc--)*fp++=atom_getfloat(argv++);
}
if (x->n1*x->n2==1){
outlet_float(x->x_obj.ob_outlet, *x->buf1**x->buf2);
return;
}
if (x->n1==1){
t_atom *a;
int i = x->n2;
t_float f = *x->buf1;
fp = x->buf2;
n = x->n2;
ap = (t_atom *)getbytes(sizeof(t_atom)*n);
a = ap;
while(i--){
SETFLOAT(a, *fp++*f);
a++;
}
} else if (x->n2==1){
t_float f = *x->buf2;
t_atom *a;
int i = x->n1;
n = x->n1;
ap = (t_atom *)getbytes(sizeof(t_atom)*n);
a = ap;
fp = x->buf1;
while(i--){
SETFLOAT(a, *fp++*f);
a++;
}
} else {
t_atom *a;
int i;
t_float *fp2=x->buf2;
fp = x->buf1;
n = x->n1;
if (x->n1!=x->n2){
post("scalar multiplication: truncating vectors to the same length");
if (x->n2<x->n1)n=x->n2;
}
ap = (t_atom *)getbytes(sizeof(t_atom)*n);
a = ap;
i=n;
while(i--){
SETFLOAT(a, *fp++**fp2++);
a++;
}
}
outlet_list(x->x_obj.ob_outlet, gensym("list"), n, ap);
freebytes(ap, sizeof(t_atom)*n);
}
static void scalmul_free(t_scalmul *x)
{
freebytes(x->buf1, sizeof(t_float)*x->n1);
freebytes(x->buf2, sizeof(t_float)*x->n2);
}
static void *scalmul_new(t_symbol *s, int argc, t_atom *argv)
{
t_scalmul *x;
ZEXY_USEVAR(s);
if (argc-1){
x = (t_scalmul *)pd_new(scalmul_class);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("list"), gensym(""));
} else x = (t_scalmul *)pd_new(scalmul_scal_class);
outlet_new(&x->x_obj, 0);
x->n1 =1;
x->buf1 =(t_float*)getbytes(sizeof(t_float));
*x->buf1=0;
if (argc)scalmul_lst2(x, gensym("list"), argc, argv);
else {
x->n2 =1;
x->buf2 =(t_float*)getbytes(sizeof(t_float));
*x->buf2=0;
}
if (argc==1)floatinlet_new(&x->x_obj, x->buf2);
return (x);
}
static void scalmul_help(t_scalmul*x)
{
post("\n%c .\t\t:: scalar multiplication (in-product)", HEARTSYMBOL);
}
void setup_0x2e(void)
{
scalmul_class = class_new(gensym("."), (t_newmethod)scalmul_new,
(t_method)scalmul_free, sizeof(t_scalmul), 0, A_GIMME, 0);
class_addlist(scalmul_class, scalmul_lst);
class_addmethod (scalmul_class, (t_method)scalmul_lst2, gensym(""), A_GIMME, 0);
class_addmethod(scalmul_class, (t_method)scalmul_help, gensym("help"), A_NULL);
scalmul_scal_class = class_new(gensym("."), 0, (t_method)scalmul_free,
sizeof(t_scalmul), 0, 0);
class_addlist(scalmul_scal_class, scalmul_lst);
class_addmethod(scalmul_scal_class, (t_method)scalmul_help, gensym("help"), A_NULL);
class_sethelpsymbol(scalmul_class, gensym("scalarmult"));
class_sethelpsymbol(scalmul_scal_class, gensym("scalarmult"));
zexy_register(".");
}
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