ffs(3C)

NAME

     ffs - find first set bit

SYNOPSIS

     #include <strings.h>

     int ffs(const int i);

DESCRIPTION

     The ffs() function finds the first bit set  (beginning  with
     the  least  significant  bit)  and returns the index of that
     bit.  Bits are numbered starting at one (the least  signifi-
     cant bit).

RETURN VALUES

     The ffs() function returns the index of the first  bit  set.
     If i is 0, then ffs() returns 0.

ERRORS

     No errors are defined.

ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|

SEE ALSO

     attributes(5)