1 files changed, 143 insertions, 0 deletions
diff --git a/src/tab_sum.c b/src/tab_sum.c
new file mode 100644
index 0000000..e27e17a
--- /dev/null
+++ b/src/tab_sum.c
@@ -0,0 +1,143 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iem_tab written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2005 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include "iem_tab.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+
+/* -------------------------- tab_sum ------------------------------ */
+
+typedef struct _tab_sum
+{
+	t_object	x_obj;
+	int				x_size_src1;
+	int				x_offset_src1;
+	float			*x_beg_mem_src1;
+	t_symbol	*x_sym_scr1;
+	void			*x_bang_out;
+	void			*x_sum_out;
+} t_tab_sum;
+
+static t_class *tab_sum_class;
+
+static void tab_sum_src(t_tab_sum *x, t_symbol *s)
+{
+	x->x_sym_scr1 = s;
+}
+
+static void tab_sum_bang(t_tab_sum *x)
+{
+	int i, n;
+	int ok_src;
+	t_float *vec_src;
+	t_float sum=0.0f;
+
+	ok_src = iem_tab_check_arrays(gensym("tab_sum"), x->x_sym_scr1, &x->x_beg_mem_src1, &x->x_size_src1, 0);
+
+	if(ok_src)
+	{
+		n = x->x_size_src1;
+		vec_src = x->x_beg_mem_src1;
+		if(n)
+		{
+			for(i=0; i<n; i++)
+			{
+				sum += vec_src[i];
+			}
+			outlet_float(x->x_sum_out, sum);
+			outlet_bang(x->x_bang_out);
+		}
+	}
+}
+
+static void tab_sum_list(t_tab_sum *x, t_symbol *s, int argc, t_atom *argv)
+{
+	int beg_src;
+	int i, n;
+	int ok_src;
+	t_float *vec_src;
+	t_float sum=0.0f;
+
+	if((argc >= 2) &&
+		IS_A_FLOAT(argv,0) &&
+		IS_A_FLOAT(argv,1))
+	{
+		beg_src = (int)atom_getintarg(0, argc, argv);
+		n = (int)atom_getintarg(1, argc, argv);
+		if(beg_src < 0)
+			beg_src = 0;
+		if(n < 0)
+			n = 0;
+
+		ok_src = iem_tab_check_arrays(gensym("tab_sum"), x->x_sym_scr1, &x->x_beg_mem_src1, &x->x_size_src1, beg_src+n);
+
+		if(ok_src)
+		{
+			vec_src = x->x_beg_mem_src1 + beg_src;
+			if(n)
+			{
+				for(i=0; i<n; i++)
+				{
+					sum += vec_src[i];
+				}
+				outlet_float(x->x_sum_out, sum);
+				outlet_bang(x->x_bang_out);
+			}
+		}
+	}
+	else
+	{
+		post("tab_sum-ERROR: list need 2 float arguments:");
+		post("  source_offset + number_of_samples_to_calc_sum-value");
+	}
+}
+
+static void tab_sum_free(t_tab_sum *x)
+{
+}
+
+static void *tab_sum_new(t_symbol *s, int argc, t_atom *argv)
+{
+	t_tab_sum *x = (t_tab_sum *)pd_new(tab_sum_class);
+	t_symbol	*src;
+
+	if((argc >= 1) &&
+		IS_A_SYMBOL(argv,0))
+	{
+		src = (t_symbol *)atom_getsymbolarg(0, argc, argv);
+	}
+	else
+	{
+		post("tab_sum-ERROR: need 1 symbol argument:");
+		post("  source_array_name");
+		return(0);
+	}
+
+	x->x_sym_scr1 = src;
+	x->x_bang_out = outlet_new(&x->x_obj, &s_bang);
+	x->x_sum_out = outlet_new(&x->x_obj, &s_float);
+	return(x);
+}
+
+void tab_sum_setup(void)
+{
+	tab_sum_class = class_new(gensym("tab_sum"), (t_newmethod)tab_sum_new, (t_method)tab_sum_free,
+					 sizeof(t_tab_sum), 0, A_GIMME, 0);
+	class_addbang(tab_sum_class, (t_method)tab_sum_bang);
+	class_addlist(tab_sum_class, (t_method)tab_sum_list);
+	class_addmethod(tab_sum_class, (t_method)tab_sum_src, gensym("src"), A_DEFSYMBOL, 0);
+	class_addmethod(tab_sum_class, (t_method)tab_sum_src, gensym("src1"), A_DEFSYMBOL, 0);
+	class_sethelpsymbol(tab_sum_class, gensym("iemhelp2/tab_sum-help"));
+}