add some more bit-twiddling words

2008-03-04 22:32:42 -06:00 · 2008-03-04 22:32:42 -06:00 · 5c93d43aa1
parent e156e0212c
commit 5c93d43aa1
1 changed files with 4 additions and 0 deletions
--- a/extra/math/functions/functions.factor
+++ b/extra/math/functions/functions.factor
@ -34,6 +34,10 @@ M: real sqrt
 : set-bit ( x n -- y ) 2^ bitor ; foldable
 : bit-clear? ( x n -- ? ) 2^ bitand zero? ; foldable
 : bit-set? ( x n -- ? ) bit-clear? not ; foldable
+: unmask ( x n -- ? ) bitnot bitand ; foldable
+: unmask? ( x n -- ? ) unmask 0 > ; foldable
+: mask ( x n -- ? ) bitand ; foldable
+: mask? ( x n -- ? ) mask 0 > ; foldable

 GENERIC: (^) ( x y -- z ) foldable