FLS(9)                              Basic C Library Functions                              FLS(9)



NAME
       fls - find last set bit in word

SYNOPSIS
       int fls(int x);

ARGUMENTS
       x
           the word to search

DESCRIPTION
       This is defined in a similar way as the libc and compiler builtin ffs, but returns the
       position of the most significant set bit.

       fls(value) returns 0 if value is 0 or the position of the last set bit if value is
       nonzero. The last (most significant) bit is at position 32.

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