FFS(3)

NAME
12.1 `ffs'--find first bit set in a word

SYNOPSIS
     int ffs(int WORD);

DESCRIPTION
`ffs' returns the first bit set in a word.

RETURNS
`ffs' returns 0 if C is 0, 1 if C is odd, 2 if C is a multiple of 2, etc.

PORTABILITY
`ffs' is not ANSI C.
   No supporting OS subroutines are required.

SEE ALSO
ffs is part of the library. The full documentation for is maintained as a Texinfo manual. If info and are properly installed at your site, the command

    info

will give you access to the complete manual.