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Re: arithmetic issues



Taylor Campbell wrote:
It is defined for the sake of computational convenience;

Fine, but it *is* defined. Originally you stated that a NaN "represents the condition of a computation whose meaning is undefined; it's not a defined result."

There are many different arithmetics. Examples of integer arithmetic that have been mentioned here are conventional arithmetic, modular arithmetic, and saturated arithmetic. IEEE flonum arithmetic is a further arithmetic; it may be strange, but it is (largely) well defined.

Regards,

Alan
--
Dr Alan Watson
Centro de Radioastronomía y Astrofísica
Universidad Astronómico Nacional de México