Index: /trunk/archive/pslib/include/psBitset.h
===================================================================
--- /trunk/archive/pslib/include/psBitset.h	(revision 603)
+++ /trunk/archive/pslib/include/psBitset.h	(revision 604)
@@ -48,4 +48,10 @@
     );
 
+/** Apply unary NOT to a bitset */
+psBitset *
+psBitsetNot(psBitset *out,		///< Output bitset, or NULL
+	    psBitset *in		///< Input bitset to be NOT-ed
+    );
+
 /* \} */ // End of MathGroup Functions