[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: reading NaNs

This page is part of the web mail archives of SRFI 77 from before July 7th, 2015. The new archives for SRFI 77 contain all messages, not just those from before July 7th, 2015.

John.Cowan wrote:
(Fast execution on processors which
provide hardware flonums that are non-IEEE, now extremely rare, excepted.)

It's not too rare processors for processores to provide almost-IEEE modes. Examples include the Alpha and ARM vector coprocessor, which do not by default correctly handle denormalized numbers. Alphas are on the way out, but ARMs are likely to be around for a while.

But *real* IEEE should be the default, because Scheme values *correctness* over *speed*.


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