> I'm not sure what you mean by "normalizing" before addition and
> subtraction.

Normalizing in this context means making sure both numbers have the binary
point in the same place.  You can't just add a 14.2 and a 13.3 fixed point
numbers as two 16 bit integers.  But you can just add two 13.3 fixed point
numbers, for example.


*****************************************************************
Olin Lathrop, embedded systems consultant in Devens Massachusetts
(978) 772-3129, olin@embedinc.com, http://www.embedinc.com

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics