/* ffs -- find first set bit in a word, counted from least significant end.
For AMD x86-64.
This file is part of the GNU C Library.
- Copyright (C) 1991-2014 Free Software Foundation, Inc.
+ Copyright (C) 1991-2015 Free Software Foundation, Inc.
Contributed by Ulrich Drepper <drepper@cygnus.com>.
The GNU C Library is free software; you can redistribute it and/or