1 files changed, 48 insertions, 0 deletions
diff --git a/cyclone/sickle/tanh.c b/cyclone/sickle/tanh.c
new file mode 100644
index 0000000..7473dcf
--- /dev/null
+++ b/cyclone/sickle/tanh.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 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);
+}