timeval_i.hpp

/* $Id$

   This file is a part of ponder, a English/American checkers game.

   Copyright (c) 2006, 2007 Quux Information.
                     Gong Jie <neo@quux.me>

   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 2 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; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
   Boston, MA 02110-1301, USA.
 */
/** @file timeval_i.hpp
 *  @brief Time calculate.
 */

#ifndef __TIMEVAL_I_HPP__
#define __TIMEVAL_I_HPP__

namespace checkers
{
	inline struct timeval& operator +=(struct timeval& lhs, time_t rhs)
	{
		lhs.tv_sec += rhs;
		return lhs;
	}

	inline struct timeval& operator -=(struct timeval& lhs,
		const struct timeval& rhs)
	{
		lhs += -rhs;
		return lhs;
	}

	inline struct timeval& operator -=(struct timeval& lhs, time_t rhs)
	{
		lhs += -rhs;
		return lhs;
	}

	inline struct timeval operator +(const struct timeval& lhs,
		const struct timeval& rhs)
	{
		struct timeval tv = lhs;
		tv += rhs;
		return tv;
	}

	inline struct timeval operator +(const struct timeval& lhs, time_t rhs)
	{
		struct timeval tv = lhs;
		tv += rhs;
		return tv;
	}

	inline struct timeval operator -(const struct timeval& lhs,
		const struct timeval& rhs)
	{
		return lhs + -rhs;
	}

	inline struct timeval operator -(const struct timeval& lhs, time_t rhs)
	{
		return lhs + -rhs;
	}

	inline bool operator >(const struct timeval& lhs,
		const struct timeval& rhs)
	{
		return lhs.tv_sec > rhs.tv_sec ||
			(lhs.tv_sec == rhs.tv_sec &&
			 lhs.tv_usec > rhs.tv_usec);
	}

	inline bool operator <(const struct timeval& lhs,
		const struct timeval& rhs)
	{
		return rhs > lhs;
	}
}

#endif // __TIMEVAL_I_HPP__
// End of file