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