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authorArnd Bergmann <arnd@arndb.de>2012-02-28 07:39:56 -0500
committerArnd Bergmann <arnd@arndb.de>2012-02-28 07:40:01 -0500
commit4d8cfec692e988b844dcaeaeb76b5780b7ef9d28 (patch)
tree67d43adab2afd18a74d08f347e3676ae1a64193f /include/linux/bitops.h
parenta3a3c4664184f86ef964323d106c62158e2b3f25 (diff)
parent1d8c38c3d1b48eeb9cfaa42a8be13a1423569eb2 (diff)
Merge branch 'cleanup-3.4' of git://github.com/hzhuang1/linux into next/cleanup
* 'cleanup-3.4' of git://github.com/hzhuang1/linux: (2 commits) rtc: sa1100: remove verification code of alarm rtc: sa1100: remove periodic code (update to v3.3-rc5)
Diffstat (limited to 'include/linux/bitops.h')
-rw-r--r--include/linux/bitops.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 3c1063acb2ab..94300fe46cce 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -56,6 +56,26 @@ static inline unsigned long hweight_long(unsigned long w)
56} 56}
57 57
58/** 58/**
59 * rol64 - rotate a 64-bit value left
60 * @word: value to rotate
61 * @shift: bits to roll
62 */
63static inline __u64 rol64(__u64 word, unsigned int shift)
64{
65 return (word << shift) | (word >> (64 - shift));
66}
67
68/**
69 * ror64 - rotate a 64-bit value right
70 * @word: value to rotate
71 * @shift: bits to roll
72 */
73static inline __u64 ror64(__u64 word, unsigned int shift)
74{
75 return (word >> shift) | (word << (64 - shift));
76}
77
78/**
59 * rol32 - rotate a 32-bit value left 79 * rol32 - rotate a 32-bit value left
60 * @word: value to rotate 80 * @word: value to rotate
61 * @shift: bits to roll 81 * @shift: bits to roll