1 files changed, 92 insertions, 0 deletions
diff --git a/src/spec2_abs~.c b/src/spec2_abs~.c
new file mode 100644
index 0000000..f74880e
--- /dev/null
+++ b/src/spec2_abs~.c
@@ -0,0 +1,92 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iem_spec2 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2006 */
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+
+/* ------------------------ spec2_abs_tilde~ ------------------------- */
+static t_class *spec2_abs_tilde_class;
+
+typedef struct _spec2_abs_tilde
+{
+  t_object  x_obj;
+  t_float   x_msi;
+} t_spec2_abs_tilde;
+
+static t_int *spec2_abs_tilde_perform(t_int *w)
+{
+  t_float *in = (t_float *)(w[1]);
+  t_float *out = (t_float *)(w[2]);
+  int n = w[3]+1;
+  
+  while(n--)
+  { 
+    *in++ = fabs(*out++);
+  }
+  return(w+4);
+}
+
+static t_int *spec2_abs_tilde_perf16(t_int *w)
+{
+  t_float *in = (t_float *)(w[1]);
+  t_float *out = (t_float *)(w[2]);
+  int n = w[3];
+  
+  while(n)
+  { 
+    in[0] = fabs(out[0]);
+    in[1] = fabs(out[1]);
+    in[2] = fabs(out[2]);
+    in[3] = fabs(out[3]);
+    in[4] = fabs(out[4]);
+    in[5] = fabs(out[5]);
+    in[6] = fabs(out[6]);
+    in[7] = fabs(out[7]);
+    in[8] = fabs(out[8]);
+    in[9] = fabs(out[9]);
+    in[10] = fabs(out[10]);
+    in[11] = fabs(out[11]);
+    in[12] = fabs(out[12]);
+    in[13] = fabs(out[13]);
+    in[14] = fabs(out[14]);
+    in[15] = fabs(out[15]);
+    
+    in += 16;
+    out += 16;
+    n -= 16;
+  }
+  in[0] = fabs(out[0]);
+  return(w+4);
+}
+
+static void spec2_abs_tilde_dsp(t_spec2_abs_tilde *x, t_signal **sp)
+{
+  int n = (sp[0]->s_n)/2;
+  
+  if(n&15)
+    dsp_add(spec2_abs_tilde_perform, 3, sp[0]->s_vec, sp[0]->s_vec, n);
+  else
+    dsp_add(spec2_abs_tilde_perf16, 3, sp[0]->s_vec, sp[0]->s_vec, n);
+}
+
+static void *spec2_abs_tilde_new(void)
+{
+  t_spec2_abs_tilde *x = (t_spec2_abs_tilde *)pd_new(spec2_abs_tilde_class);
+  
+  outlet_new(&x->x_obj, &s_signal);
+  x->x_msi = 0.0f;
+  return (x);
+}
+
+void spec2_abs_tilde_setup(void)
+{
+  spec2_abs_tilde_class = class_new(gensym("spec2_abs~"), (t_newmethod)spec2_abs_tilde_new,
+    0, sizeof(t_spec2_abs_tilde), 0, 0);
+  CLASS_MAINSIGNALIN(spec2_abs_tilde_class, t_spec2_abs_tilde, x_msi);
+  class_addmethod(spec2_abs_tilde_class, (t_method)spec2_abs_tilde_dsp, gensym("dsp"), 0);
+  class_sethelpsymbol(spec2_abs_tilde_class, gensym("iemhelp2/spec2_abs~-help"));
+}