diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bitops.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index f826d7f3b34..29e0da48de8 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -148,6 +148,17 @@ 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 & 31)) | (word >> ((-shift) & 31)); +} + #include <asm/bitops.h> /* linux/include/asm-generic/bitops/non-atomic.h */ |