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48 lines
1.0 KiB
C++
48 lines
1.0 KiB
C++
// 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) 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_IS_DIMENSION_LIST_HPP
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#define BOOST_UNITS_IS_DIMENSION_LIST_HPP
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///
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/// \file
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/// \brief Check that a type is a valid dimension list.
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///
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#include <boost/mpl/bool.hpp>
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#include <boost/units/units_fwd.hpp>
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namespace boost {
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namespace units {
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/// Check that a type is a valid dimension list.
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template<typename Seq>
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struct is_dimension_list :
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public mpl::false_
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{ };
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template<typename Item, typename Next>
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struct is_dimension_list<list<Item, Next> > :
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public mpl::true_
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{ };
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template<>
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struct is_dimension_list<dimensionless_type> :
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public mpl::true_
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{ };
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} // namespace units
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} // namespace boost
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#endif // BOOST_UNITS_IS_DIMENSION_LIST_HPP
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