This function should be used to convert a variable to numeric type.
The conversion results a double or long variable. If the source variable was already a long or double the function does nothing but results the source variable.
undef is converted to long zero.
The function calls execute_Convert2Long and execute_Convert2Double thus all other parameters are treated according to that.
pFixSizeMemoryObject execute_Convert2Numeric(pExecuteObject pEo,
pFixSizeMemoryObject pVar,
pMortalList pMyMortal
);