D2X.HELPREXX

D2X function

+-----------------------------------------------------------------------------+
| D2X(whole-number, [length])                                                 |
+-----------------------------------------------------------------------------+

Returns a string of upper case hexadecimal characters (i.e., 'A'-'F', '0'-'9')
that is the hexadecimal representation of the specified whole-number.  If the
length is not specified, the whole-number must be non-negative, and the result
will be stripped of any leading '0' characters.  If the length is specified,
the result will be sign-extended to the left to that length, or truncated on
the left if the length is shorter than the result.

Examples:

    D2X(9)      == '9'
    D2X(129)    == '81'
    D2X(129,l)  == 'l'
    D2X(l29,2)  == '81'
    D2X(129,4)  == '0081'
    D2X(257,2)  == '01'.
    D2X(-127,2) == '81'
    D2X(-127,4) == 'FF81'
    D2X(12,0)   == ''