1 /* Find first set bit in a word, counted from least significant end.
3 Copyright (C) 1991-2014 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5 Contributed by Torbjorn Granlund (tege@sics.se).
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <http://www.gnu.org/licenses/>. */
21 #define ffsl __something_else
28 __ffsll (long long int x
)
32 asm ("cntlzd %0,%1" : "=r" (cnt
) : "r" (x
& -x
));
35 weak_alias (__ffsll
, ffsll
)
37 weak_alias (__ffsll
, ffsl
)