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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


#include <boost/mpl/bool.hpp>

#include <boost/units/units_fwd.hpp>

namespace boost {

namespace units {

/// Check that a type is a valid dimension list.
template<typename Seq>
struct is_dimension_list :
    public mpl::false_
{ };

template<typename Item, typename Next>
struct is_dimension_list<list<Item, Next> > :
    public mpl::true_
{ };

struct is_dimension_list<dimensionless_type> :
    public mpl::true_
{ };

} // namespace units

} // namespace boost