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| __FFS(9) | Basic C Library Functions | __FFS(9) |
NAME¶
__ffs - find first set bit in word
SYNOPSIS¶
unsigned long __ffs(unsigned long word);
ARGUMENTS¶
unsigned long word
The word to search
DESCRIPTION¶
Undefined if no bit exists, so code should check against 0 first.
COPYRIGHT¶
| June 2017 | Kernel Hackers Manual 4.11 |