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/* (C) Guenter Geiger <geiger@epy.co.at> */
#include <m_pd.h>
typedef struct inv
{
t_object x_obj;
} t_inv;
static t_class *inv_class;
static void *inv_new(void)
{
t_inv *x = (t_inv *)pd_new(inv_class);
outlet_new(&x->x_obj, gensym("signal"));
return (x);
}
static t_int *inv_perform(t_int *w) /* not static; also used in d_fft.c */
{
float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2);
t_int n = *(t_int *)(w+3);
while (n--)
{
*out++ = 1/ *in++;
}
return (w + 4);
}
static void inv_dsp(t_inv *x, t_signal **sp)
{
dsp_add(inv_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
}
void inv_tilde_setup(void)
{
inv_class = class_new(gensym("inv~"), (t_newmethod)inv_new, 0,
sizeof(t_inv), 0, 0);
class_addcreator(inv_new,gensym("1/x~"),0);
class_addmethod(inv_class, nullfn, gensym("signal"), 0);
class_addmethod(inv_class, (t_method)inv_dsp, gensym("dsp"), 0);
}
typedef struct scalarinv
{
t_object x_obj;
} t_scalarinv;
static t_class *scalarinv_class;
static void *scalarinv_new(void)
{
t_scalarinv *x = (t_scalarinv *)pd_new(scalarinv_class);
outlet_new(&x->x_obj, gensym("float"));
return (x);
}
static void scalarinv_float(t_scalarinv *x,t_float val)
{
outlet_float(x->x_obj.ob_outlet,1.0f/val);
}
void inv_setup(void)
{
scalarinv_class = class_new(gensym("inv"), (t_newmethod)scalarinv_new, 0,
sizeof(t_scalarinv), 0, 0);
class_addcreator(scalarinv_new,gensym("1/x"),0);
class_addfloat(scalarinv_class, (t_method)scalarinv_float);
}
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