diff options
author | Felix Fietkau <nbd@openwrt.org> | 2014-04-30 15:27:03 +0400 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2014-04-30 15:27:03 +0400 |
commit | 9203927e585d3fec720c9f654e3e263e350bb02c (patch) | |
tree | 43eb4df9a21627bf119dd2340b42591c37b4002a /utils.h | |
parent | 31b3893a72493c849c67aa1cd8c7c4c457ca360c (diff) |
utils: add a bitfield size macro
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Diffstat (limited to 'utils.h')
-rw-r--r-- | utils.h | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -167,6 +167,8 @@ static inline uint16_t __u_bswap16(uint16_t val) #define BITS_PER_LONG (8 * sizeof(unsigned long)) #endif +#define BITFIELD_SIZE(_n) (((_n) + (BITS_PER_LONG - 1)) / BITS_PER_LONG) + static inline void bitfield_set(unsigned long *bits, int bit) { bits[bit / BITS_PER_LONG] |= (1UL << (bit % BITS_PER_LONG)); |