Boost_1_39_0/boost/units/is_dimensionless_quantity.hpp

   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 #include <boost/units/is_quantity_of_dimension.hpp>
  15 #include <boost/units/units_fwd.hpp>
  16
  17 namespace boost {
  18
  19 namespace units {
  20
  21 /// check that a type is a dimensionless quantity
  22 template<class T>
  23 struct is_dimensionless_quantity :
  24     public is_quantity_of_dimension<T,dimensionless_type>
  25 { };
  26
  27 } // namespace units
  28
  29 } // namespace boost
  30
  31 #endif // BOOST_UNITS_IS_DIMENSIONLESS_QUANTITY_HPP