From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!mx02.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: Bob Brown Newsgroups: comp.lang.ada Subject: Re: Everything You Know Is Wrong Date: Wed, 2 Mar 2016 16:36:09 +0000 (UTC) Organization: Aioe.org NNTP Server Message-ID: References: <87twkrpvcf.fsf@adaheads.sparre-andersen.dk> <9974be39-f94d-4293-819e-bd1c9a1ddd65@googlegroups.com> NNTP-Posting-Host: 9LfaCYgENb9zJtTE3S55MA.user.gioia.aioe.org X-Complaints-To: abuse@aioe.org X-Notice: Filtered by postfilter v. 0.8.2 Xref: news.eternal-september.org comp.lang.ada:29650 Date: 2016-03-02T16:36:09+00:00 List-Id: On 2016-03-02, J-P. Rosen wrote: > Le 02/03/2016 16:44, Bob Brown a ?crit : >>> This was a deliberate decision, to make Ada compatible with various >>> floating point models. Many (most? all?) number crunching machines do >>> not have IEEE arithmetic, >> >> Really? Which one(s) are you talking about? I didn't even know there were >> any number crunchers aside from the sad ones made from a kid's pool full >> of Intel chips stuck together with tape and glue. All the real stuff like >> CDC/Cray has been gone for ages. > Well, true enough, I don't know for recent machines. Even Silicon > Graphics has disappeared (not so long ago), and AFAIK, they were not IEEE. > >>> and there has been famous papers claiming that Java requiring IEEE >>> arithmetic was a huge mistake. >> >> I would be interested in seeing the references if you have them at hand. >> > https://www.cs.berkeley.edu/~wkahan/JAVAhurt.pdf Thanks. I'll check that one out. I'm a little surprised before reading it. I thought Kahan was the main reason IEEE math exists at all. Bob > > > >