> I am looking for some code to do 2's comp 16 bit addition. Does anyone
know
> of any links please. I have searched the MC web site, and piclist.com and
> found nothing.

The mechanics of doing 2's compliment addition is the same as unsigned
addition, is the same as fixed point addition.  There is a difference in how
some bits are interpreted to determine status of the arithmetic operation,
like overflow.  If you don't care about that, you can use excactly the same
routine.


********************************************************************
Olin Lathrop, embedded systems consultant in Littleton Massachusetts
(978) 742-9014, olin@embedinc.com, http://www.embedinc.com

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