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/* Copyright (c) 2002-2003 krzYszcz and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
#include <math.h>
#include "m_pd.h"
#include "sickle/sic.h"
#if defined(_WIN32) || defined(MACOSX)
/* cf pd/src/x_arithmetic.c */
#define tanhf tanh
#endif
typedef t_sic t_tanh;
static t_class *tanh_class;
static t_int *tanh_perform(t_int *w)
{
int nblock = (int)(w[1]);
t_float *in = (t_float *)(w[2]);
t_float *out = (t_float *)(w[3]);
while (nblock--)
{
float f = *in++;
*out++ = tanhf(f); /* CHECKME no protection against overflow */
}
return (w + 4);
}
static void tanh_dsp(t_tanh *x, t_signal **sp)
{
dsp_add(tanh_perform, 3, sp[0]->s_n, sp[0]->s_vec, sp[1]->s_vec);
}
static void *tanh_new(void)
{
t_tanh *x = (t_tanh *)pd_new(tanh_class);
outlet_new((t_object *)x, &s_signal);
return (x);
}
void tanh_tilde_setup(void)
{
tanh_class = class_new(gensym("tanh~"),
(t_newmethod)tanh_new, 0,
sizeof(t_tanh), 0, 0);
sic_setup(tanh_class, tanh_dsp, SIC_FLOATTOSIGNAL);
}
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