Function hull

Computes an interval that has all the values of x and y, note that it may be possible that values that don't belong to either x or y are included in the interval that represents the hull

Example

Interval.hull(
  Interval(-1, 1),
  Interval(5, 7)
)  // Interval(-1, 7)
Interval.hull(
  Interval(-1, 1),
  Interval.EMPTY
)  // Interval(-1, 1)

Returns