1 files changed, 81 insertions, 0 deletions
diff --git a/binshift.c b/binshift.c
new file mode 100644
index 0000000..aaa184d
--- /dev/null
+++ b/binshift.c
@@ -0,0 +1,81 @@
+#include "m_pd.h"
+#include <math.h>
+
+static t_class *binshift_class;
+
+typedef struct _binshift
+{
+  t_object x_obj;
+  t_float x_f1;
+  t_float x_f2;
+  t_int x_t1;
+  t_int x_t2;
+} t_binshift;
+
+/* ------------------ binop1:  +, -, *, / ----------------------------- */
+
+static void *binshift1_new(t_class *floatclass, t_floatarg f)
+{
+    t_binshift *x = (t_binshift *)pd_new(floatclass);
+    outlet_new(&x->x_obj, &s_float);
+    floatinlet_new(&x->x_obj, &x->x_f2);
+    x->x_f1 = 0;
+    x->x_f2 = f;
+    return (x);
+}
+
+
+/* --------------------- rightshift ------------------------------- */
+
+static t_class *binshift1_rshift_class;
+
+static void *binshift1_rshift_new(t_floatarg f)
+{
+  return (binshift1_new(binshift1_rshift_class, f));
+}
+
+static void binshift1_rshift_bang(t_binshift *x)
+{
+  outlet_float(x->x_obj.ob_outlet, ((int)(x->x_f1) >> (int)(x->x_f2)));
+}
+
+static void binshift1_rshift_float(t_binshift *x, t_float f)
+{
+  outlet_float(x->x_obj.ob_outlet, ((int)(x->x_f1 = f) >> (int)(x->x_f2)));
+}
+
+/* --------------------- leftshift ------------------------------- */
+
+static t_class *binshift1_lshift_class;
+
+static void *binshift1_lshift_new(t_floatarg f)
+{
+  return (binshift1_new(binshift1_lshift_class, f));
+}
+
+static void binshift1_lshift_bang(t_binshift *x)
+{
+  outlet_float(x->x_obj.ob_outlet, ((int)(x->x_f1) << (int)(x->x_f2)));
+}
+
+static void binshift1_lshift_float(t_binshift *x, t_float f)
+{
+  outlet_float(x->x_obj.ob_outlet, ((int)(x->x_f1 = f) << (int)(x->x_f2)));
+}
+
+/* setup */
+
+void binshift_setup(void)
+{
+  // post("binary shift");
+
+    binshift1_rshift_class = class_new(gensym(">>"), (t_newmethod)binshift1_rshift_new, 0,
+    	sizeof(t_binshift), 0, A_DEFFLOAT, 0);
+    class_addbang(binshift1_rshift_class, binshift1_rshift_bang);
+    class_addfloat(binshift1_rshift_class, (t_method)binshift1_rshift_float);
+
+    binshift1_lshift_class = class_new(gensym("<<"), (t_newmethod)binshift1_lshift_new, 0,
+    	sizeof(t_binshift), 0, A_DEFFLOAT, 0);
+    class_addbang(binshift1_lshift_class, binshift1_lshift_bang);
+    class_addfloat(binshift1_lshift_class, (t_method)binshift1_lshift_float);
+}