Path: utzoo!utgpu!watmath!att!dptg!rutgers!apple!brutus.cs.uiuc.edu!wuarchive!wugate!uunet!mcsun!cernvax!achille From: achille@cernvax.UUCP (achille petrilli) Newsgroups: comp.lang.fortran Subject: Re: Extended Precision for real constants Message-ID: <1068@cernvax.UUCP> Date: 30 Aug 89 11:34:22 GMT References: <282@unmvax.unm.edu> <303@unmvax.unm.edu> <1598@convex.UUCP> <123897@sun.Eng.Sun.COM> <1621@convex.UUCP> Reply-To: achille@cernvax.UUCP (achille petrilli) Organization: CERN European Laboratory for Particle Physics, CH-1211 Geneva, Switzerland Lines: 36 In article <1621@convex.UUCP> bleikamp@convex.UUCP (Richard Bleikamp) writes: >In article <123897@sun.Eng.Sun.COM> khb@sun.UUCP (Keith Bierman - Advanced Languages - Floating Point Group ) writes: >>In article <1598@convex.UUCP> psmith@convex.com (Presley Smith) writes: >>> >>> stuff about f77 codes not running under f8x compilers ... >> >>My experience in porting many large codes amongst machines from over >>20 different vendors is that codes which rely on this feature (and >>most of the others brought up in debate) are, in fact, not portable >>now. Users who have _never_ moved their code off the first processor >>> ........ > >What I've experienced (in a previous job) contradicts this. I've helped port >programs, originally from a CDC or Cray, where single precision has plenty of >significant digits for their application. When it was ported to a VAX, > Now, I like f8x and after having seen this debate presenting even the possibility of having to REWRITE code to have it work in f8x, I'd be\ glad to see some REAL code, that, for the draft std, will have to be rewritten to work under f8x. I'm not talking about precision, this even changes (or could change) with a new release of the fortran library, nothing to do with f77, f8x or whatever, I agree in this with Keith. I guess the opponents to f8x have nothing better to do that try to have people feel f77 and f8x are 2 different things. Let get pragmatic, what should I rewrite under f8x ? do loops, ifs, I/O statements ? what ? I'm really interested to know (despite the fact I like f8x, I'm still able to listen to different ideas :-). Thank you Achille Petrilli Cray Operation