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[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.20.1/] [gold/] [ffsll.c] - Blame information for rev 304

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1 205 julius
/* ffsll.c -- version of ffsll for gold.  */
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/* Copyright 2009 Free Software Foundation, Inc.
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   Written by Ian Lance Taylor <iant@google.com>.
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   This file is part of gold.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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   MA 02110-1301, USA.  */
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#include "config.h"
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#include <string.h>
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extern int ffsll (long long);
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/* This file implements ffsll for systems which don't have it.  We use
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   ffsll if possible because gcc supports it as a builtin which will
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   use a machine instruction if there is one.  */
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int
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ffsll (long long arg)
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{
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  unsigned long long i;
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  int ret;
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  if (arg == 0)
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    ret = 0;
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  else
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    {
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      ret = 1;
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      for (i = (unsigned long long) arg; (i & 1) == 0; i >>= 1)
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        ++ret;
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    }
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  return ret;
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}

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