CLASS TEMPLATE (3)

NAME
boost::date_time::us_dst_rules - Depricated: Class to calculate dst boundaries for US time zones.

SYNOPSIS

// In header: <boost/date_time/dst_rules.hpp>
template<typename date_type_, typename time_duration_type_,
         unsigned int dst_start_offset_minutes = 120,
         short dst_length_minutes = 60>
class us_dst_rules {
public:
  // types
  typedef time_duration_type_                             time_duration_type;
  typedef date_type_                                      date_type;
  typedef date_type::year_type                            year_type;
  typedef date_type::calendar_type                        calendar_type;
  typedef date_time::last_kday_of_month< date_type >      lkday;
  typedef date_time::first_kday_of_month< date_type >     fkday;
  typedef date_time::nth_kday_of_month< date_type >       nkday;
  typedef dst_calculator< date_type, time_duration_type > dstcalc;
  // public static functions
  static time_is_dst_result
  local_is_dst(const date_type &, const time_duration_type &);
  static bool is_dst_boundary_day(date_type);
  static date_type local_dst_start_day(year_type);
  static date_type local_dst_end_day(year_type);
  static time_duration_type dst_offset();
};

DESCRIPTION

  us_dst_rules public static functions

    1.

    static time_is_dst_result
    local_is_dst(const date_type & d, const time_duration_type & td);

    Calculates if the given local time is dst or not. Determines if the time is really in DST or not. Also checks for invalid and ambiguous.

    2.

    static bool is_dst_boundary_day(date_type d);

    3.

    static date_type local_dst_start_day(year_type year);

    4.

    static date_type local_dst_end_day(year_type year);

    5.

    static time_duration_type dst_offset();