year.hpp 1.1 KB

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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) 2007-2008 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_UNIT_SYSTEMS_OTHER_YEAR_HPP_INCLUDED
  11. #define BOOST_UNIT_SYSTEMS_OTHER_YEAR_HPP_INCLUDED
  12. #include <boost/units/scaled_base_unit.hpp>
  13. #include <boost/units/static_rational.hpp>
  14. #include <boost/units/scale.hpp>
  15. #include <boost/units/base_units/si/second.hpp>
  16. // Julian year = 365.25 days exactly = 8766 hours exactly
  17. namespace boost {
  18. namespace units {
  19. namespace metric {
  20. typedef scaled_base_unit<boost::units::si::second_base_unit, scale<31557600, static_rational<1> > > year_base_unit;
  21. }
  22. template<>
  23. struct base_unit_info<metric::year_base_unit> {
  24. static BOOST_CONSTEXPR const char* name() { return("Julian year"); }
  25. static BOOST_CONSTEXPR const char* symbol() { return("yr"); }
  26. };
  27. }
  28. }
  29. #endif