sf_hextodec           Conversions of hexidecimal to decimal
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    function uint sf_hextodec prototype
      parameters const char hex_number

    The hextodec and dectohex preform conversions of hexidecimal to decimal
    and decimal to hexidecimal.  As obvious as these functions should be,
    it is important to note that their returns vary based on the passed
    parameter's length.  For example, sf_dectohex( 156 ) returns "9C" and
    not "009C".  If the latter is desired, you must use the following
    type of syntax:

    *\ Return a char( 4 ) dectohex
    ? replicate( "0", 4 - len( sf_dectohex( 156 ) ) ) + sf_dectohex( 156 )

    *\ Other examples...
    ? sf_hextodec( "A" )           && 10
    ? sf_dectohex( 156 )           && "9C"
    ? sf_dectohex( 65535 )         && "FFFF"