One other issue I forgot to ask about... it says: int, long, float and double data is ordered by ascending numeric value.
This seems really convenient, but how do you plan to achieve this? You might add a comment about your method. For example, sorting a long (64bit int) and double (64 bit float) by converting the long to double will produce invalid sort results for longs which overflow the double bits and truncate. It seems pulling off this feat would require detecting when the conversion to double will overflow a double and then convert to an unlimited precision format for the comparison. Is this what you are doing?
