Hi,

I try to write an external, which sends a list to an outlet.

The following code is an example of calculating the maximum of a signal and send the maximum and it's index to the outlet.

But line 30 *outlet_float(x->f_out, (max[0], max[1]) );* does only send one value to the outlet.

How can I achieve to send lists?

Thanks for help in advance,

Xaver

```
#include "m_pd.h"
static t_class *maximum_tilde_class;
typedef struct _maximum_tilde {
t_object x_obj;
t_sample d;
t_inlet*x_in1;
t_outlet*f_out;
} t_maximum_tilde;
t_int *maximum_tilde_perform(t_int *w)
{
t_maximum_tilde *x = (t_maximum_tilde *)(w[1]);
t_sample *in1 = (t_sample *)(w[2]);
int n = (int)(w[3]);
float max[] = { 0,-1 };
float abs_val = 0;
for (int i = 0; i < n; i++) {
abs_val = fabs(in1[i]);
if (abs_val > max[0]) {
max[0] = abs_val;
max[1] = i;
}
}
outlet_float(x->f_out, (max[0], max[1]) );
return (w + 4);
}
void maximum_tilde_dsp(t_maximum_tilde *x, t_signal **sp)
{
dsp_add(maximum_tilde_perform, 3,
x,
sp[0]->s_vec, data forum
sp[0]->s_n);
}
void maximum_tilde_free(t_maximum_tilde *x)
{
inlet_free(x->x_in1);
}
void *maximum_tilde_new(t_floatarg f)
{
t_maximum_tilde *x = (t_maximum_tilde *)pd_new(maximum_tilde_class);
x->f_out = outlet_new(&x->x_obj, &s_list);
return (void *)x;
}
void init_maximum(void) {
maximum_tilde_class = class_new(gensym("max~"),
(t_newmethod)maximum_tilde_new,
0,//(t_method)maximum_tilde_free,
sizeof(t_maximum_tilde),
CLASS_DEFAULT,
A_DEFFLOAT, 0);
class_addmethod(maximum_tilde_class,
(t_method)maximum_tilde_dsp, gensym("dsp"), 0);
CLASS_MAINSIGNALIN(maximum_tilde_class, t_maximum_tilde, d);
}
void helloworld_setup(void) {
init_maximum();
}
```