boost/units/is_dimensionless_unit.hpp

0001 // Boost.Units - A C++ library for zero-overhead dimensional analysis and
0002 // unit/quantity manipulation and conversion
0003 //
0004 // Copyright (C) 2003-2008 Matthias Christian Schabel
0005 // Copyright (C) 2008 Steven Watanabe
0006 //
0007 // Distributed under the Boost Software License, Version 1.0. (See
0008 // accompanying file LICENSE_1_0.txt or copy at
0009 // http://www.boost.org/LICENSE_1_0.txt)
0010
0011 #ifndef BOOST_UNITS_IS_DIMENSIONLESS_UNIT_HPP
0012 #define BOOST_UNITS_IS_DIMENSIONLESS_UNIT_HPP
0013
0014 /// \file
0015 /// \brief Check that a type is a dimensionless unit.
0016
0017 #include <boost/units/is_unit_of_dimension.hpp>
0018 #include <boost/units/units_fwd.hpp>
0019
0020 namespace boost {
0021
0022 namespace units {
0023
0024 /// Check that a type is a dimensionless unit.
0025 template<class T>
0026 struct is_dimensionless_unit :
0027     public is_unit_of_dimension<T,dimensionless_type>
0028 { };
0029
0030 } // namespace units
0031
0032 } // namespace boost
0033
0034 #endif // BOOST_UNITS_IS_DIMENSIONLESS_UNIT_HPP