0b6a182c
 Hu Chunming
添加无鉴权注册和注销
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// Boost.Units - A C++ library for zero-overhead dimensional analysis and
// unit/quantity manipulation and conversion
//
// Copyright (C) 2003-2008 Matthias Christian Schabel
// Copyright (C) 2008 Steven Watanabe
//
// 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)
#ifndef BOOST_UNITS_GET_DIMENSION_HPP
#define BOOST_UNITS_GET_DIMENSION_HPP
///
/// \file
/// \brief Get the dimension of a unit, absolute unit and quantity.
/// \details
///
#include <boost/units/units_fwd.hpp>
namespace boost {
namespace units {
template<class T>
struct get_dimension {};
/// Get the dimension of a unit.
template<class Dim,class System>
struct get_dimension< unit<Dim,System> >
{
typedef Dim type;
};
/// Get the dimension of an absolute unit.
template<class Unit>
struct get_dimension< absolute<Unit> >
{
typedef typename get_dimension<Unit>::type type;
};
/// Get the dimension of a quantity.
template<class Unit,class Y>
struct get_dimension< quantity<Unit,Y> >
{
typedef typename get_dimension<Unit>::type type;
};
} // namespace units
} // namespace boost
#endif // BOOST_UNITS_GET_DIMENSION_HPP
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