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// since this is present in a lot of libs, it is conditionally compiled
#ifdef HAVE_ABS_TILDE
#include "m_pd.h"
#include <math.h>
/* ------------------------- abs~ -------------------------- */
static t_class *abs_class;
typedef struct _abs
{
t_object x_obj;
} t_abs;
static t_int *abs_perform(t_int *w)
{
t_abs *x = (t_abs *)(w[1]);
t_sample *in = (t_sample *)(w[2]);
t_sample *out = (t_sample *)(w[3]);
int n = (int)(w[4]);
while (n--)
{
t_sample f = *in++;
if (f < 0) f = -f;
*out++ = f;
}
return (w+5);
}
static void abs_dsp(t_abs *x, t_signal **sp)
{
dsp_add(abs_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
}
static void *abs_new(void)
{
t_abs *x = (t_abs *)pd_new(abs_class);
outlet_new(&x->x_obj, &s_signal);
return (x);
}
void abs_tilde_setup(void)
{
abs_class = class_new(gensym("abs~"), (t_newmethod)abs_new, 0,
sizeof(t_abs), 0, A_NULL);
class_addmethod(abs_class, (t_method)nullfn, &s_signal, A_NULL);
class_addmethod(abs_class, (t_method)abs_dsp, gensym("dsp"), A_NULL);
}
#endif
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