1 files changed, 95 insertions, 0 deletions
diff --git a/src/tabread4_dp.c b/src/tabread4_dp.c
new file mode 100755
index 0000000..6c05079
--- /dev/null
+++ b/src/tabread4_dp.c
@@ -0,0 +1,95 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iem_dp written by IOhannes m zmoelnig, Thomas Musil, Copyright (c) IEM KUG Graz Austria 1999 - 2007 */
+/* double precision library */
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include "iem_dp.h"
+
+/* -------------------------- tabread4__ ------------------------------ */
+/* based on miller's tabread4 which is part of pd */
+
+static t_class *tabread4_dp_class;
+
+typedef struct _tabread4_dp
+{
+  t_object  x_obj;
+  t_symbol  *x_arrayname;
+  t_float   x_residual;
+} t_tabread4_dp;
+
+static void *tabread4_dp_new(t_symbol *s)
+{
+  t_tabread4_dp *x = (t_tabread4_dp *)pd_new(tabread4_dp_class);
+
+  x->x_arrayname = s;
+  floatinlet_new(&x->x_obj, &x->x_residual);
+  outlet_new(&x->x_obj, &s_float);
+  return (x);
+}
+
+static void tabread4_dp_float(t_tabread4_dp *x, t_floatarg f)
+{
+  t_garray *ga;
+  iemarray_t *vec;
+  int npoints;
+  
+  if(!(ga = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class)))
+  {
+    if(*x->x_arrayname->s_name)
+      pd_error(x, "tabread4__: %s: no such array", x->x_arrayname->s_name);
+    iemarray_setfloat(vec, 0, 0.0f);
+  }
+  else if (!iemarray_getarray(ga, &npoints, &vec))
+  {
+    pd_error(x, "%s: bad template for tabread4__", x->x_arrayname->s_name);
+    iemarray_setfloat(vec, 0, 0.0f);
+  }
+  else
+  {
+	  double findex = iem_dp_calc_sum(f, x->x_residual);
+    double frac;
+    int index = findex;
+    int maxindex = npoints - 3;
+    t_sample a,  b,  c,  d, cmb;
+    
+    if(index < 1)
+      index = 1, frac = 0;
+    else if (index > maxindex)
+      index = maxindex, frac = 1;
+    else frac = findex - index;
+
+    vec += index;
+    
+    a = iemarray_getfloat(vec,-1);
+    b = iemarray_getfloat(vec, 0);
+    c = iemarray_getfloat(vec, 1);
+    d = iemarray_getfloat(vec, 2);
+    
+    cmb = c-b;
+    outlet_float(x->x_obj.ob_outlet, (npoints ? b+frac*(cmb-0.1666667f*(1.-frac)*((d-a-3.0f*cmb)*frac+(d+2.0f*a-3.0f*b))) : 0));
+  }
+}
+
+static void tabread4_dp_set(t_tabread4_dp *x, t_symbol *s)
+{
+    x->x_arrayname = s;
+}
+
+static void tabread4_dp_free(t_tabread4_dp *x)
+{
+}
+
+void tabread4_dp_setup(void)
+{
+  tabread4_dp_class = class_new(gensym("tabread4__"),
+    (t_newmethod)tabread4_dp_new, (t_method)tabread4_dp_free, 
+    sizeof(t_tabread4_dp), 0, A_DEFSYM, 0);
+  class_addcreator((t_newmethod)tabread4_dp_new, gensym("tabread4''"), A_DEFSYM, 0);
+  class_addfloat(tabread4_dp_class, (t_method)tabread4_dp_float);
+  class_addmethod(tabread4_dp_class, (t_method)tabread4_dp_set, gensym("set"), A_SYMBOL, 0);
+}
+