useage: TNum.compare(Number_number0, Number number1);
returns:
-1 _number0 Is Less Than _number1
0 _number0 Equals _number1
1 _number0 Is Greater Than _number1
-2 Error
Returns an int value that is negative if cCompare comes before cRef in the alphabet, zero if
the two are equal, and positive if cCompare comes after cRef in the alphabet.