1 // Boost.Units - A C++ library for zero-overhead dimensional analysis and 2 // unit/quantity manipulation and conversion 3 // 4 // Copyright (C) 2003-2008 Matthias Christian Schabel 5 // Copyright (C) 2008 Steven Watanabe 6 // 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) 10 11 #ifndef BOOST_UNITS_IS_DIMENSIONLESS_QUANTITY_HPP 12 #define BOOST_UNITS_IS_DIMENSIONLESS_QUANTITY_HPP 13 14 /// \file 15 /// \brief check that a type is a dimensionless quantity 16 17 #include <boost/units/is_quantity_of_dimension.hpp> 18 #include <boost/units/units_fwd.hpp> 19 20 namespace boost { 21 22 namespace units { 23 24 /// Check that a type is a dimensionless quantity. 25 template<class T> 26 struct is_dimensionless_quantity : 27 public is_quantity_of_dimension<T,dimensionless_type> 28 { }; 29 30 } // namespace units 31 32 } // namespace boost 33 34 #endif // BOOST_UNITS_IS_DIMENSIONLESS_QUANTITY_HPP 35