From 2b41ff8d01772ca760721894fd53b76d5818655d Mon Sep 17 00:00:00 2001 From: Tim Blechmann Date: Sun, 1 Jan 2006 18:39:19 +0000 Subject: adding error function svn path=/trunk/externals/tb/; revision=4345 --- erf~/erf~.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 erf~/erf~.c (limited to 'erf~/erf~.c') diff --git a/erf~/erf~.c b/erf~/erf~.c new file mode 100644 index 0000000..2f59212 --- /dev/null +++ b/erf~/erf~.c @@ -0,0 +1,64 @@ +/* + * + * 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); +} -- cgit v1.2.1