1 // Boost.Units - A C++ library for zero-overhead dimensional analysis and
2 // unit/quantity manipulation and conversion
4 // Copyright (C) 2003-2008 Matthias Christian Schabel
5 // Copyright (C) 2008 Steven Watanabe
7 // Distributed under the Boost Software License, Version 1.0. (See
8 // accompanying file LICENSE_1_0.txt or copy at
9 // http://www.boost.org/LICENSE_1_0.txt)
11 #ifndef BOOST_UNITS_IS_UNIT_OF_SYSTEM_HPP
12 #define BOOST_UNITS_IS_UNIT_OF_SYSTEM_HPP
16 /// \brief Check that a type is a unit in a specified system.
19 #include <boost/mpl/bool.hpp>
20 #include <boost/units/units_fwd.hpp>
26 /// Check that a type is a unit in a specified system.
27 template<class T,class System>
28 struct is_unit_of_system :
32 template<class Dim,class System>
33 struct is_unit_of_system< unit<Dim,System>,System > :
37 template<class Dim,class System>
38 struct is_unit_of_system< absolute<unit<Dim,System> >,System > :
46 #endif // BOOST_UNITS_IS_UNIT_OF_SYSTEM_HPP