63e88f80
 Hu Chunming
提交三方库
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// boost/chrono/round.hpp ------------------------------------------------------------//
// (C) Copyright Howard Hinnant
// Copyright 2011 Vicente J. Botet Escriba
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See http://www.boost.org/libs/chrono for documentation.
#ifndef BOOST_CHRONO_CEIL_HPP
#define BOOST_CHRONO_CEIL_HPP
#include <boost/chrono/duration.hpp>
namespace boost
{
namespace chrono
{
/**
* rounds up
*/
template <class To, class Rep, class Period>
To ceil(const duration<Rep, Period>& d)
{
To t = duration_cast<To>(d);
if (t < d)
++t;
return t;
}
} // namespace chrono
} // namespace boost
#endif
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