/* Copyright (C) 2008  Emmanuel Varoquaux

   This file is part of XOS.

   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, see <http://www.gnu.org/licenses/>. */

#ifndef _MISC_H
#define _MISC_H

static inline unsigned long exp2(unsigned int k)
{
  return 1UL << k;
}

static inline unsigned int ulog2(unsigned long n)
{
  unsigned int k;

  k = 0;
  while (exp2(k) < n)
    k++;
  return k;
}

#endif