__FFS(9)                            Basic C Library Functions                            __FFS(9)



NAME
       __ffs - find first set bit in word

SYNOPSIS
       unsigned long __ffs(unsigned long word);

ARGUMENTS
       word
           The word to search

DESCRIPTION
       Undefined if no bit exists, so code should check against 0 first.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                                  __FFS(9)