#include <boost/units/base_units/si/kelvin.hpp>
#include <boost/units/base_units/temperature/celsius.hpp>
#include <boost/units/base_units/temperature/fahrenheit.hpp>
#include <boost/units/unit.hpp>
#include <boost/units/quantity.hpp>
#include <boost/units/systems/si.hpp>
#include <boost/units/io.hpp>

#include <iostream>

typedef boost::units::temperature::celsius_base_unit::unit_type celsius_unit;
BOOST_UNITS_STATIC_CONSTANT(celsius, celsius_unit);
typedef boost::units::quantity<celsius_unit> celsius_quantity;

typedef boost::units::absolute<celsius_unit> celsius_absolute_unit;
BOOST_UNITS_STATIC_CONSTANT(celsius_absolute, celsius_absolute_unit);
typedef boost::units::quantity<celsius_absolute_unit> celsius_absolute_quantity;

// template<class Unit, class T>
// std::string unit_name(const boost::units::quantity<boost::units::absolute<Unit>, T>&)
// {
//   return name_string(Unit());
// }

// template<class Unit, class T>
// std::string unit_symbol(const boost::units::quantity<boost::units::absolute<Unit>, T>&)
// {
//   return symbol_string(Unit());
// }

template<class Unit, class T>
std::string unit_name(const boost::units::quantity<Unit, T>&)
{
  return name_string(Unit());
}

template<class Unit, class T>
std::string unit_symbol(const boost::units::quantity<Unit, T>&)
{
  return symbol_string(Unit());
}

int main()
{
  celsius_quantity c = 54.2 * celsius;
  std::cout << "Name is " << unit_name(c) << '\n';
  std::cout << "Name is " << unit_symbol(c) << '\n';
  std::cout << "Value is " << c << '\n';
  
  celsius_absolute_quantity ac = 54.2 * celsius_absolute;
  std::cout << "Name is " << unit_name(ac) << '\n';
  std::cout << "Name is " << unit_symbol(ac) << '\n';
  std::cout << "Value is " << ac << '\n';
}