/* ffsll.c -- version of ffsll for gold. */ /* Copyright 2009 Free Software Foundation, Inc. Written by Ian Lance Taylor <iant@google.com>. This file is part of gold. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ #include "config.h" #include <string.h> extern int ffsll (long long); /* This file implements ffsll for systems which don't have it. We use ffsll if possible because gcc supports it as a builtin which will use a machine instruction if there is one. */ int ffsll (long long arg) { unsigned long long i; int ret; if (arg == 0) ret = 0; else { ret = 1; for (i = (unsigned long long) arg; (i & 1) == 0; i >>= 1) ++ret; } return ret; }