Integration with the prototype

integration.cpp

#include <tuple>
#include <boost/chrono/date/algorithms/weekday_from_days.hpp>
#include <boost/chrono/date/algorithms/days_from_civil.hpp>
#include <boost/chrono/date/algorithms/civil_from_days.hpp>



    days_date::days_date(chrono::year y, chrono::month m, chrono::day d) BOOST_NOEXCEPT
    {
      x_ = days_from_civil(y,m,d) //Passing opaque has better performance results      
      //But the days_from_civil algorithm start calculating from 1970-01-01
    }
//          BOOST_VERIFY(std::get<0>(d_1) == y);
//          BOOST_VERIFY(std::get<1>(d_1) == m);
//          BOOST_VERIFY(std::get<2>(d_1) == i);

    BOOST_FORCEINLINE chrono::day to_day() const BOOST_NOEXCEPT
    {
        return chrono::day(std::get<2>(civil_from_days(x_))) ;
        //The 3rd value from civil from days tuple is the day value
        //But the x_ should be generated from days_from_civil as civil_from_days also takes dates from 1970-01-01

//        return chrono::day(day_from_day_number(), no_check);
    }
    BOOST_FORCEINLINE chrono::month to_month() const BOOST_NOEXCEPT
    {
        return chrono::month(std::get<1>(civil_from_days(x_))) ;
        //The 2nd value from civil from days tuple is the month value
        //But the x_ should be generated from days_from_civil as civil_from_days also takes dates from 1970-01-01

//        return chrono::month(month_from_day_number(), no_check);
    }

    BOOST_FORCEINLINE chrono::year to_year() const BOOST_NOEXCEPT
    {

        return chrono::year(std::get<0>(civil_from_days(x_))) ;
        //The 1st value from civil from days tuple is the year value
        //But the x_ should be generated from days_from_civil as civil_from_days also takes dates from 1970-01-01
    
//        return chrono::year(year_from_day_number());
    }

    bool
    days_date::leap_from_day_number() const BOOST_NOEXCEPT  {

    	return is_leap(std::get<0>(civil_from_days(x_)));
        //The x_ should be generated from days_from_civil as civil_from_days also takes dates from 1970-01-01

 //   	return is_leap(year_from_day_number());
  	}


      /**
       * @Returns: A weekday constructed with an int corresponding to *this
       * days_date's day of the week (a value in the range of [0 - 6], 0 is Sunday).
       */
    BOOST_FORCEINLINE BOOST_CONSTEXPR chrono::weekday to_weekday() const BOOST_NOEXCEPT
    {
		return chrono::weekday(weekday_from_days(x_));		
        //But the x_ should be generated from days_from_civil as weekday_from_days takes dates from 1970-01-01

//        return chrono::weekday((x_ + 1) % weekday::size);
    }