FFS
NAME SYNOPSIS DESCRIPTION RETURN VALUE CONFORMING TO
ffs - find first bit set in a word
#include i);
The ffs() function returns the position of the first bit set in the word i. The least significant bit is position 1 and the most significant position 32.
The ffs() function returns the position of the first bit set, or 0 if no bits are set.
BSD 4.3, SUSv2
According to SUSv2, this function is defined in
