1 files changed, 41 insertions, 0 deletions
diff --git a/invert.c b/invert.c
new file mode 100644
index 0000000..0b15ec3
--- /dev/null
+++ b/invert.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 1997-1999 Mark Danks.
+ * For information on usage and redistribution, and for a DISCLAIMER OF ALL
+ * WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+ */
+
+#include "m_pd.h"
+
+/* -------------------------- invert ------------------------------ */
+
+/* instance structure */
+
+static t_class *invert_class;
+
+typedef struct _invert
+{
+	t_object    x_obj;			/* obligatory object header */
+	t_outlet    *t_out1;	    /* the outlet */
+} t_invert;
+
+static void invert_float(t_invert *x, t_floatarg n)
+{
+    if (n) outlet_float(x->t_out1, 0.f);
+    else outlet_float(x->t_out1, 1.f);
+}
+
+static void *invert_new(t_symbol *s) /* init vals in struc */
+{
+    t_invert *x = (t_invert *)pd_new(invert_class);
+    x->t_out1 = outlet_new(&x->x_obj, 0);
+    return(x);
+}
+
+void invert_setup(void)
+{
+    invert_class = class_new(gensym("invert"), (t_newmethod)invert_new, 0,
+    	    	    	sizeof(t_invert), 0, A_NULL);
+    class_addfloat(invert_class, (t_method)invert_float);
+
+	 class_sethelpsymbol(invert_class, gensym("help-invert"));
+}