// Boost.Units - A C++ library for zero-overhead dimensional analysis and
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// unit/quantity manipulation and conversion
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//
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// Copyright (C) 2003-2008 Matthias Christian Schabel
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// Copyright (C) 2007-2008 Steven Watanabe
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_UNITS_DETAIL_ORDINAL_HPP_INCLUDED
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#define BOOST_UNITS_DETAIL_ORDINAL_HPP_INCLUDED
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#include <boost/mpl/less.hpp>
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#include <boost/mpl/bool.hpp>
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namespace boost {
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namespace units {
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namespace detail {
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struct ordinal_tag {};
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}
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template<int N>
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struct ordinal {
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typedef detail::ordinal_tag tag;
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BOOST_STATIC_CONSTEXPR long value = N;
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};
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template<int N>
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BOOST_CONSTEXPR_OR_CONST long ordinal<N>::value;
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}
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namespace mpl {
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template<>
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struct less_impl<units::detail::ordinal_tag, units::detail::ordinal_tag> {
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template<class T1, class T2>
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struct apply : bool_<(T1::value) < (T2::value)> {};
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};
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}
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}
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#endif
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