Gets the double value from the Atom if it is a NumAtom.
[C#] static double GetDouble(Atom atom) [Visual Basic] Shared Function GetDouble(atom As Atom) As Double
static double GetDouble(Atom atom)
Shared Function GetDouble(atom As Atom) As Double
Get the double value from the supplied Atom if it is a NumAtom.
If the atom is not a NumAtom or if it is null then zero will be returned.
None.