boost/units/base_units/metric/year.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) 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
  11 #ifndef BOOST_UNIT_SYSTEMS_OTHER_YEAR_HPP_INCLUDED
  12 #define BOOST_UNIT_SYSTEMS_OTHER_YEAR_HPP_INCLUDED
  13
  14 #include <boost/units/scaled_base_unit.hpp>
  15 #include <boost/units/static_rational.hpp>
  16 #include <boost/units/scale.hpp>
  17 #include <boost/units/base_units/si/second.hpp>
  18
  19 // Julian year = 365.25 days exactly = 8766 hours exactly
  20
  21 namespace boost {
  22 namespace units {
  23 namespace metric {
  24
  25 typedef scaled_base_unit<boost::units::si::second_base_unit, scale<31557600, static_rational<1> > > year_base_unit;
  26
  27 }
  28
  29 template<>
  30 struct base_unit_info<metric::year_base_unit> {
  31     static const char* name()   { return("Julian year"); }
  32     static const char* symbol() { return("yr"); }
  33 };
  34
  35 }
  36 }
  37
  38 #endif