diff options
Diffstat (limited to 'include/linux/bitops.h')
-rw-r--r-- | include/linux/bitops.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index 69c1edb9fe54..40d54731de7e 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h | |||
@@ -65,6 +65,46 @@ static inline __u32 ror32(__u32 word, unsigned int shift) | |||
65 | return (word >> shift) | (word << (32 - shift)); | 65 | return (word >> shift) | (word << (32 - shift)); |
66 | } | 66 | } |
67 | 67 | ||
68 | /** | ||
69 | * rol16 - rotate a 16-bit value left | ||
70 | * @word: value to rotate | ||
71 | * @shift: bits to roll | ||
72 | */ | ||
73 | static inline __u16 rol16(__u16 word, unsigned int shift) | ||
74 | { | ||
75 | return (word << shift) | (word >> (16 - shift)); | ||
76 | } | ||
77 | |||
78 | /** | ||
79 | * ror16 - rotate a 16-bit value right | ||
80 | * @word: value to rotate | ||
81 | * @shift: bits to roll | ||
82 | */ | ||
83 | static inline __u16 ror16(__u16 word, unsigned int shift) | ||
84 | { | ||
85 | return (word >> shift) | (word << (16 - shift)); | ||
86 | } | ||
87 | |||
88 | /** | ||
89 | * rol8 - rotate an 8-bit value left | ||
90 | * @word: value to rotate | ||
91 | * @shift: bits to roll | ||
92 | */ | ||
93 | static inline __u8 rol8(__u8 word, unsigned int shift) | ||
94 | { | ||
95 | return (word << shift) | (word >> (8 - shift)); | ||
96 | } | ||
97 | |||
98 | /** | ||
99 | * ror8 - rotate an 8-bit value right | ||
100 | * @word: value to rotate | ||
101 | * @shift: bits to roll | ||
102 | */ | ||
103 | static inline __u8 ror8(__u8 word, unsigned int shift) | ||
104 | { | ||
105 | return (word >> shift) | (word << (8 - shift)); | ||
106 | } | ||
107 | |||
68 | static inline unsigned fls_long(unsigned long l) | 108 | static inline unsigned fls_long(unsigned long l) |
69 | { | 109 | { |
70 | if (sizeof(l) == 4) | 110 | if (sizeof(l) == 4) |