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authormusil <tmusil@users.sourceforge.net>2006-12-09 02:00:52 +0000
committermusil <tmusil@users.sourceforge.net>2006-12-09 02:00:52 +0000
commitd6b088044e161a27d49df537bbb6d998a8d0e50d (patch)
tree1a1b3a30e994767f4ef97b90194782258f2baa8a /iemlib1/src/iem_pow4~.c
parent32dc0c0deb13ce57f099f616ddc427296970d8a5 (diff)
// class_sethelpsymbol();
changed help-*.pd to *-help.pd chanded file structure to standard 1st step remove old svn path=/trunk/externals/iemlib/; revision=6756
Diffstat (limited to 'iemlib1/src/iem_pow4~.c')
-rw-r--r--iemlib1/src/iem_pow4~.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/iemlib1/src/iem_pow4~.c b/iemlib1/src/iem_pow4~.c
new file mode 100644
index 0000000..838ed5f
--- /dev/null
+++ b/iemlib1/src/iem_pow4~.c
@@ -0,0 +1,78 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2006 */
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+
+/* ------------------------ iem_pow4~ ----------------------------- */
+
+static t_class *iem_pow4_tilde_class;
+
+typedef struct _iem_pow4_tilde
+{
+ t_object x_obj;
+ t_float x_exp;
+ t_float x_msi;
+} t_iem_pow4_tilde;
+
+static void iem_pow4_tilde_ft1(t_iem_pow4_tilde *x, t_floatarg f)
+{
+ x->x_exp = f;
+}
+
+static t_int *iem_pow4_tilde_perform(t_int *w)
+{
+ t_float *in = (t_float *)(w[1]);
+ t_float *out = (t_float *)(w[2]);
+ t_iem_pow4_tilde *x = (t_iem_pow4_tilde *)(w[3]);
+ t_float y=x->x_exp;
+ t_float f, g;
+ int n = (int)(w[4])/4;
+
+ while (n--)
+ {
+ f = *in;
+ if(f < 0.01f)
+ f = 0.01f;
+ else if(f > 1000.0f)
+ f = 1000.0f;
+ g = log(f);
+ f = exp(g*y);
+ *out++ = f;
+ *out++ = f;
+ *out++ = f;
+ *out++ = f;
+ in += 4;
+ }
+ return (w+5);
+}
+
+static void iem_pow4_tilde_dsp(t_iem_pow4_tilde *x, t_signal **sp)
+{
+ dsp_add(iem_pow4_tilde_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n);
+}
+
+static void *iem_pow4_tilde_new(t_floatarg f)
+{
+ t_iem_pow4_tilde *x = (t_iem_pow4_tilde *)pd_new(iem_pow4_tilde_class);
+
+ x->x_exp = f;
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+ outlet_new(&x->x_obj, gensym("signal"));
+ x->x_msi = 0;
+ return (x);
+}
+
+void iem_pow4_tilde_setup(void)
+{
+ iem_pow4_tilde_class = class_new(gensym("iem_pow4~"), (t_newmethod)iem_pow4_tilde_new, 0,
+ sizeof(t_iem_pow4_tilde), 0, A_DEFFLOAT, 0);
+ class_addcreator((t_newmethod)iem_pow4_tilde_new, gensym("icot~"), 0);
+ CLASS_MAINSIGNALIN(iem_pow4_tilde_class, t_iem_pow4_tilde, x_msi);
+ class_addmethod(iem_pow4_tilde_class, (t_method)iem_pow4_tilde_dsp, gensym("dsp"), 0);
+ class_addmethod(iem_pow4_tilde_class, (t_method)iem_pow4_tilde_ft1, gensym("ft1"), A_FLOAT, 0);
+// class_sethelpsymbol(iem_pow4_tilde_class, gensym("iemhelp/help-iem_pow4~"));
+}