Myke Predko wrote:

> The addition/subtraction routines handle and produce two's complement
> numbers as a matter of course.  The multiplication routines should not
> have any problems with negatives.

  Sorry, I don't follow.  *Why* do the multiplication routines not have
any problem with negatives?

  As far as I have ever been able to determine, all multiply and divide
procedures require the rule:  determine the sign of the result (XOR the
signs of the two operands), make each operand positive, perform the
operation, apply the sign to the result.
--
  Cheers,
        Paul B.