From 1489999475315025188 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,d93488bb970aa444 X-Google-Attributes: gidf78e5,public X-Google-ArrivalTime: 2001-06-02 16:30:02 PST Path: archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!newsfeed.gamma.ru!Gamma.RU!newsfeed.icl.net!dispose.news.demon.net!news.demon.co.uk!demon!mail2news.demon.co.uk!not-for-mail From: Stephen Clamage Newsgroups: comp.std.c++ Subject: Re: How to test for NaNs and infinites? Date: Sat, 2 Jun 2001 23:29:56 GMT Organization: Excite@Home - The Leader in Broadband http://home.com/faster Approved: Fergus Henderson , moderator of comp.std.c++ Message-ID: References: <3B176D2F.70C3E7F7@meteo.fr> Reply-To: stephen.clamage@sun.com X-Trace: mail2news.demon.co.uk 991524600 mail2news:26873 mail2news mail2news.demon.co.uk X-Complaints-To: abuse@demon.net X-Mail2News-Path: news.demon.net!mulga.cs.mu.oz.au X-Authentication-Warning: mulga.cs.mu.OZ.AU: fjh set sender to devnull@stump.algebra.com using -f X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) X-Newsreader: Forte Agent 1.8/32.548 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit NNTP-Posting-Date: Sat, 02 Jun 2001 15:59:12 PDT Lines: 22 Xref: archiver1.google.com comp.std.c++:5599 On Fri, 1 Jun 2001 19:13:53 GMT, Hubert HOLIN wrote: > I am wondering about the provisions in the standard (yes I finally >bought a copy ;-) ) for NaNs and infinites. There are no provisions in the C++ standard. The standard makes almost no requirements on floating-point types. Implementations are not required to support NaN or infinity. If support is provided, it can take any form that the implementation chooses. Other standards provide definitions and APIs for floating-point, and an implementation could choose to follow one or more of them. --- Steve Clamage, stephen.clamage@sun.com --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://www.research.att.com/~austern/csc/faq.html ]