// 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 // http://www.boost.org/LICENSE_1_0.txt) #ifndef BOOST_UNITS_IS_UNIT_OF_SYSTEM_HPP #define BOOST_UNITS_IS_UNIT_OF_SYSTEM_HPP /// /// \file /// \brief Check that a type is a unit in a specified system. /// #include <boost/mpl/bool.hpp> #include <boost/units/units_fwd.hpp> namespace boost { namespace units { /// Check that a type is a unit in a specified system. template<class T,class System> struct is_unit_of_system : public mpl::false_ { }; template<class Dim,class System> struct is_unit_of_system< unit<Dim,System>,System > : public mpl::true_ { }; template<class Dim,class System> struct is_unit_of_system< absolute<unit<Dim,System> >,System > : public mpl::true_ { }; } // namespace units } // namespace boost #endif // BOOST_UNITS_IS_UNIT_OF_SYSTEM_HPP