1. NAME▲

ffs - find first set bit in word

2. SYNOPSIS ▲

int ffs(int  x );

3. ARGUMENTS ▲

x
    the word to search

4. DESCRIPTION ▲

This is defined the same way as the libc and compiler builtin ffs routines, therefore differs in spirit from the other bitops.

ffs(value) returns 0 if value is 0 or the position of the first set bit if value is nonzero. The first (least significant) bit is at position 1.

5. COPYRIGHT ▲