--- gforth/prim	2011/12/02 22:06:13	1.262
+++ gforth/prim	2011/12/31 15:29:25	1.264
@@ -1,6 +1,6 @@
 \ Gforth primitives
 
-\ Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006,2007,2008,2009,2010 Free Software Foundation, Inc.
+\ Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006,2007,2008,2009,2010,2011 Free Software Foundation, Inc.
 
 \ This file is part of Gforth.
 
@@ -1103,6 +1103,22 @@ lshift	( u1 n -- u2 )		core	l_shift
 :
     0 ?DO 2* LOOP ;
 
+umax	( u1 u2 -- u )	core
+if (u1<u2)
+  u = u2;
+else
+  u = u1;
+:
+ 2dup u< IF swap THEN drop ;
+
+umin	( u1 u2 -- u )	core
+if (u1<u2)
+  u = u1;
+else
+  u = u2;
+:
+ 2dup u> IF swap THEN drop ;
+
 \g compare
 
 \ comparisons(prefix, args, prefix, arg1, arg2, wordsets...)