1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/*
*
* Error function for pd
* Copyright (C) 2006 Tim Blechmann
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "m_pd.h"
#include "math.h"
static t_class *erf_class;
typedef struct _erf
{
t_object x_obj;
float x_f;
} t_erf;
static void *erf_new(void)
{
t_erf *x = (t_erf *)pd_new(erf_class);
outlet_new(&x->x_obj, gensym("signal"));
x->x_f = 0;
return (x);
}
static t_int *erf_perform(t_int *w)
{
t_float *in = (t_float *)(w[1]);
t_float *out = (t_float *)(w[2]);
int n = (int)(w[3]);
while (n--)
*out++ = erff(*in++);
return w+4;
}
static void erf_dsp(t_erf *x, t_signal **sp)
{
dsp_add(erf_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
}
void erf_tilde_setup(void)
{
erf_class = class_new(gensym("erf~"), (t_newmethod)erf_new, 0,
sizeof(t_erf), 0, A_DEFFLOAT, 0);
CLASS_MAINSIGNALIN(erf_class, t_erf, x_f);
class_addmethod(erf_class, (t_method)erf_dsp, gensym("dsp"), 0);
}
|
