ffs(3) - NetBSD Manual Pages

FFS(3)                  NetBSD Library Functions Manual                 FFS(3)


NAME
ffs -- find first bit set in a bit string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <strings.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 right- most bit. A return value of 0 means that the argument was zero.
SEE ALSO
bitstring(3)
HISTORY
The ffs() function appeared in 4.3BSD. NetBSD 5.1.2 April 19, 1994 NetBSD 5.1.2

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