diff options
Diffstat (limited to 'cyclone/sickle/acos.c')
-rw-r--r-- | cyclone/sickle/acos.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/cyclone/sickle/acos.c b/cyclone/sickle/acos.c new file mode 100644 index 0000000..1dd5719 --- /dev/null +++ b/cyclone/sickle/acos.c @@ -0,0 +1,48 @@ +/* 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(NT) || defined(MACOSX) +/* cf pd/src/x_arithmetic.c */ +#define acosf acos +#endif + +typedef t_sic t_acos; +static t_class *acos_class; + +static t_int *acos_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++ = acosf(f); /* CHECKED no protection against NaNs */ + } + return (w + 4); +} + +static void acos_dsp(t_acos *x, t_signal **sp) +{ + dsp_add(acos_perform, 3, sp[0]->s_n, sp[0]->s_vec, sp[1]->s_vec); +} + +static void *acos_new(void) +{ + t_acos *x = (t_acos *)pd_new(acos_class); + outlet_new((t_object *)x, &s_signal); + return (x); +} + +void acos_tilde_setup(void) +{ + acos_class = class_new(gensym("acos~"), + (t_newmethod)acos_new, 0, + sizeof(t_acos), 0, 0); + sic_setup(acos_class, acos_dsp, SIC_FLOATTOSIGNAL); +} |