System.NumberType - Manhunter07/MFL GitHub Wiki
Declaration
const NumberType = 3
Description
The NumberType constant in the System package represents the type code for real numbers and decimal/hex integers. It is returned when retrieving the type of any numeric value using the TypeOf function.
Other than the name might suggest, it is not a type but a constant. If you want to restrict function parameters to accept numbers only, use System.Number instead.