diff options
| author | Rusty Russell | 2009-01-03 16:19:03 +1030 |
|---|---|---|
| committer | Rusty Russell | 2009-01-03 16:19:03 +1030 |
| commit | 5c134dad43443aa9c9606eaf47c378a6b9c5c597 (patch) | |
| tree | 8f724fd07b26b443527f9886bd37b795901c5c7f /include/asm-mn10300 | |
| parent | 16a206260ee70f181de6a3672678545859589ef2 (diff) | |
mn10300: define __fls
Like fls, but can't be handed 0 and returns the bit number.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'include/asm-mn10300')
| -rw-r--r-- | include/asm-mn10300/bitops.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/asm-mn10300/bitops.h b/include/asm-mn10300/bitops.h index cc6d40c05cf3..0b610f482abb 100644 --- a/include/asm-mn10300/bitops.h +++ b/include/asm-mn10300/bitops.h @@ -196,6 +196,17 @@ int fls(int x) } /** + * __fls - find last (most-significant) set bit in a long word + * @word: the word to search + * + * Undefined if no set bit exists, so code should check against 0 first. + */ +static inline unsigned long __fls(unsigned long word) +{ + return __ilog2_u32(word); +} + +/** * ffs - find first bit set * @x: the word to search * |