module TZInfo::RubyCoreSupport

def self.datetime_new!(ajd = 0, of = 0, sg = Date::ITALY)
  DateTime.new!(ajd, of, sg)
end

def self.datetime_new!(ajd = 0, of = 0, sg = Date::ITALY)
  DateTime.new0(ajd, of, sg)
end

def self.datetime_new!(ajd = 0, of = 0, sg = Date::ITALY)
  # Convert from an Astronomical Julian Day number to a civil Julian Day number.

  jd = ajd + of + HALF_DAYS_IN_DAY
  
  # Ruby trunk revision 31862 changed the behaviour of DateTime.jd so that it will no

  # longer accept a fractional civil Julian Day number if further arguments are specified.

  # Calculate the hours, minutes and seconds to pass to jd.

  
  jd_i = jd.to_i
  jd_i -= 1 if jd < 0
  hours = (jd - jd_i) * 24
  hours_i = hours.to_i
  minutes = (hours - hours_i) * 60
  minutes_i = minutes.to_i
  seconds = (minutes - minutes_i) * 60
  
  DateTime.jd(jd_i, hours_i, minutes_i, seconds, of, sg)
end

def self.rational_new!(numerator, denominator = 1)
  Rational.new!(numerator, denominator)
end

def self.rational_new!(numerator, denominator = 1)
  Rational(numerator, denominator)
end