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=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,7b69a8818c20ab9f X-Google-Attributes: gid103376,public From: Charles Hixson Subject: Re: Y21C Bug :-) Date: 2000/01/05 Message-ID: <38738A12.3C5093FC@earthlink.net>#1/1 X-Deja-AN: 568731997 Content-Transfer-Encoding: 7bit References: <84nqbo$q28$1@nnrp1.deja.com> <84o0g2$u8v$1@nnrp1.deja.com> <84pvrs$7q1@ftp.kvaerner.com> <84t8qk$b9q$1@nnrp1.deja.com> <387246D7.8B1B2E8B@earthlink.net> <84ujpj$6ge$1@nnrp1.deja.com> X-Posted-Path-Was: not-for-mail X-Accept-Language: en Content-Type: text/plain; charset=us-ascii X-ELN-Date: Wed Jan 5 10:14:43 2000 X-Complaints-To: abuse@earthlink.net X-ELN-Insert-Date: Wed Jan 5 10:14:43 2000 X-Trace: newsread1.prod.itd.earthlink.net 947096083 198.94.156.19 (Wed, 05 Jan 2000 10:14:43 PST) Organization: EarthLink Network, Inc. MIME-Version: 1.0 NNTP-Posting-Date: Wed, 05 Jan 2000 10:14:43 PST Newsgroups: comp.lang.ada Date: 2000-01-05T00:00:00+00:00 List-Id: Smiley? Well... I'm not too serious about this... Conversion from floats would be a bit of a hassle. But it does accurately reflect the fact that dates further from the "center" are known less accurately. Still, as Kieth Thompson points out, for less work and not much more storage one could use a 128 bit fixed number, which would avoid another Y2K problem for the history of the universe. (OK, I guess a smiley was appropriate.) But I'd rather cover more time and sacrifice a bit of precision. Say a coverage of 3,000 billion years at 260 zeptosecond resolution. :-) The GNAT standard time of 1677 to about 2262 would lead to a massive need to rewrite all of our code just as it was getting too complex to deal with! :-) (GNAT standard taken from Keith Thompson's response. Sorry, I didn't look this up. zeptoseconds huh? Hadn't heard about them! ) Robert Dewar wrote: > In article <387246D7.8B1B2E8B@earthlink.net>, > Charles Hixson wrote: > > Robert Dewar wrote: > > > ... > > I am sort of guessing that a smiley is missing here, but if not, > time is clearly a case where absolute error control and not > relative error control is important, so the use of fixed point > is far preferable. > > Sent via Deja.com http://www.deja.com/ > Before you buy.