It seems as though you have a misapprehension about the twos

complement notation. not x (where x is positive) is not equal to -x.

I think this might best be explored with 0. Obviously,

mathematically, -0 = 0, however, in twos complement, not 0 = -1.

On Tue, Dec 6, 2011 at 10:48 AM, rogerdodger91 [via TECS Questions and

Answers Forum] <

[hidden email]> wrote:

> So when im adding positive x, to positive y. And I negate either one and set

> f to 1. Is it right that the result is a number that is one less compared to

> the result i would have gotten if I used a negative sign instead of the

> negation bit?