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-rw-r--r--iemlib2/src/round_zero.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/iemlib2/src/round_zero.c b/iemlib2/src/round_zero.c
new file mode 100644
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+++ b/iemlib2/src/round_zero.c
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+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib2 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2006 */
+
+#include "m_pd.h"
+#include "iemlib.h"
+
+
+/* ------------------------ round_zero ---------------------------- */
+/* ------ small float numbers of an anything message within ------- */
+/* ---- plus minus initial argument will be truncated to zero ----- */
+
+static t_class *round_zero_class;
+
+typedef struct _round_zero
+{
+ t_object x_obj;
+ t_float x_bound;
+} t_round_zero;
+
+static void round_zero_anything(t_round_zero *x, t_symbol *s, int ac, t_atom *av)
+{
+ int i;
+ t_float f, bound=x->x_bound;
+
+ for(i=0; i<ac; i++)
+ {
+ if(IS_A_FLOAT(av, i))
+ {
+ f = atom_getfloatarg(i, ac, av);
+ if((f <= bound)&&(f >= -bound))
+ {
+ f = 0.0f;
+ SETFLOAT(av+i, f);
+ }
+ }
+ }
+ outlet_anything(x->x_obj.ob_outlet, s, ac, av);
+}
+
+static void *round_zero_new(t_floatarg bound)
+{
+ t_round_zero *x = (t_round_zero *)pd_new(round_zero_class);
+
+ if(bound < 0.0f)
+ x->x_bound = -bound;
+ else
+ x->x_bound = bound;
+ outlet_new(&x->x_obj, &s_list);
+ return (x);
+}
+
+void round_zero_setup(void)
+{
+ round_zero_class = class_new(gensym("round_zero"), (t_newmethod)round_zero_new,
+ 0, sizeof(t_round_zero), 0, A_DEFFLOAT, 0);
+ class_addanything(round_zero_class, round_zero_anything);
+// class_sethelpsymbol(round_zero_class, gensym("iemhelp/help-round_zero"));
+}