surface_density.hpp 972 B

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  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. #ifndef BOOST_UNITS_SURFACE_DENSITY_DERIVED_DIMENSION_HPP
  11. #define BOOST_UNITS_SURFACE_DENSITY_DERIVED_DIMENSION_HPP
  12. #include <boost/units/derived_dimension.hpp>
  13. #include <boost/units/physical_dimensions/length.hpp>
  14. #include <boost/units/physical_dimensions/mass.hpp>
  15. namespace boost {
  16. namespace units {
  17. /// derived dimension for surface density : L^-2 M
  18. typedef derived_dimension<length_base_dimension,-2,
  19. mass_base_dimension,1>::type surface_density_dimension;
  20. } // namespace units
  21. } // namespace boost
  22. #endif // BOOST_UNITS_SURFACE_DENSITY_DERIVED_DIMENSION_HPP