public GeInterval(
	double lower = NaN,
	double upper = NaN
)

Public Sub New ( 
	Optional lower As Double = NaN,
	Optional upper As Double = NaN
)

public:
GeInterval(
	double lower = NaN, 
	double upper = NaN
)

new : 
        ?lower : float * 
        ?upper : float 
(* Defaults:
        let _lower = defaultArg lower NaN
        let _upper = defaultArg upper NaN
*)
-> GeInterval