MirOS Manual: ffs(3)

FFS(3)                     BSD Programmer's Manual                      FFS(3)

NAME

     ffs - find first bit set in a bit string

SYNOPSIS

     #include <string.h>

     int
     ffs(int value);

DESCRIPTION

     The ffs() function finds the first bit set in value and returns the index
     of that bit. Bits are numbered starting from 1, starting at the rightmost
     bit. A return value of 0 means that the argument was zero.

SEE ALSO

     bitstring(3)

HISTORY

     The ffs() function appeared in 4.3BSD.

MirOS BSD #10-current           April 19, 1991                               1

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