vserver 2.0 rc7

[linux-2.6.git] / include / linux / bitops.h

diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 48f87b9..cb3c3ef 100644 (file)
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -134,4 +134,26 @@ static inline unsigned long hweight_long(unsigned long w)
        return sizeof(w) == 4 ? generic_hweight32(w) : generic_hweight64(w);
 }
 
+/*
+ * rol32 - rotate a 32-bit value left
+ *
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static inline __u32 rol32(__u32 word, unsigned int shift)
+{
+       return (word << shift) | (word >> (32 - shift));
+}
+
+/*
+ * ror32 - rotate a 32-bit value right
+ *
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static inline __u32 ror32(__u32 word, unsigned int shift)
+{
+       return (word >> shift) | (word << (32 - shift));
+}
+
 #endif