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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) 2007-2008 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_DETAIL_ORDINAL_HPP_INCLUDED
#define BOOST_UNITS_DETAIL_ORDINAL_HPP_INCLUDED
#include <boost/mpl/less.hpp>
#include <boost/mpl/bool.hpp>
namespace boost {
namespace units {
namespace detail {
struct ordinal_tag {};
}
template<int N>
struct ordinal {
typedef detail::ordinal_tag tag;
BOOST_STATIC_CONSTEXPR long value = N;
};
template<int N>
BOOST_CONSTEXPR_OR_CONST long ordinal<N>::value;
}
namespace mpl {
template<>
struct less_impl<units::detail::ordinal_tag, units::detail::ordinal_tag> {
template<class T1, class T2>
struct apply : bool_<(T1::value) < (T2::value)> {};
};
}
}
#endif
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