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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


/// \file
/// \brief Check that a type is a quantity in a specified system.

#include <boost/mpl/bool.hpp>
#include <boost/units/units_fwd.hpp>
#include <boost/units/is_unit_of_system.hpp>

namespace boost {

namespace units {

/// Check that a type is a quantity in a specified system. 
template<class T,class System>
struct is_quantity_of_system :
    public mpl::false_
{ };

template<class Unit,class Y,class System>
struct is_quantity_of_system< quantity< Unit,Y>,System > :
    public is_unit_of_system<Unit, System>
{ };

} // namespace units

} // namespace boost