/* ffsll.c -- version of ffsll for gold.  */

/* Copyright (C) 2009-2024 Free Software Foundation, Inc.
  Written by Ian Lance Taylor <[email protected]>.

  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;
}