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Groups > comp.lang.c > #139019
| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: A final word on casting. |
| Date | 2018-12-24 13:44 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <87r2e7f39l.fsf@bsb.me.uk> (permalink) |
| References | (4 earlier) <875zvki950.fsf@bsb.me.uk> <fabc96a8-762e-430e-a567-8658f60fe0d5@googlegroups.com> <QdOTD.34006$Ck1.30728@fx18.am4> <87pntsgm97.fsf@bsb.me.uk> <e7c60c93-f61b-418f-b0e1-0170f64e7687@googlegroups.com> |
Malcolm McLean <malcolm.arthur.mclean@gmail.com> writes: > On Sunday, December 23, 2018 at 5:56:46 PM UTC, Ben Bacarisse wrote: >> Bart <bc@freeuk.com> writes: >> >> > Try this program, which starts from 1.0 then successively ends 0.9, >> > 0.09, 0.009 etc to get progressively longer versions of 1.999... >> > >> > It gets closer and closer to 2.0, but is never exactly 2.0: >> >> If you are going to do numerical work, you would need to understand >> what's happening but it's much simpler, for me, to leave you puzzled. I >> am not at all sure you really want to understand. If I'm wrong, and >> this is a part of C you'd like to learn, I will gladly explain. >> > In mathematical notation, 1.999... equals two, not two minus an > infinitesimal. A good compiler will have a patch to make sure a literal > resolves to the right value. Except you can't write 1.999... and most programming languages. You certainly can't in C, so instead C has a rule about what value should be picked based on what the programmer writes. -- Ben.
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A final word on casting. chanrasjid@gmail.com - 2018-12-23 03:02 -0800
Re: A final word on casting. Bart <bc@freeuk.com> - 2018-12-23 12:11 +0000
Re: A final word on casting. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-23 13:08 +0000
Re: A final word on casting. Bart <bc@freeuk.com> - 2018-12-23 14:43 +0000
Re: A final word on casting. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-23 14:56 +0000
Re: A final word on casting. chanrasjid@gmail.com - 2018-12-23 07:08 -0800
Re: A final word on casting. Bart <bc@freeuk.com> - 2018-12-23 15:55 +0000
Re: A final word on casting. Bart <bc@freeuk.com> - 2018-12-23 16:07 +0000
Re: A final word on casting. James Kuyper <jameskuyper@alumni.caltech.edu> - 2018-12-23 08:21 -0800
Re: A final word on casting. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-23 17:56 +0000
Re: A final word on casting. Bart <bc@freeuk.com> - 2018-12-23 19:23 +0000
Re: A final word on casting. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-23 20:12 +0000
Re: A final word on casting. James Kuyper <jameskuyper@alumni.caltech.edu> - 2018-12-23 14:06 -0800
Re: A final word on casting. Tim Rentsch <txr@alumni.caltech.edu> - 2018-12-28 09:34 -0800
Re: A final word on casting. Bart <bc@freeuk.com> - 2018-12-28 20:29 +0000
Re: A final word on casting. Tim Rentsch <txr@alumni.caltech.edu> - 2018-12-28 15:07 -0800
Re: A final word on casting. Richard Damon <Richard@Damon-Family.org> - 2018-12-28 20:56 -0500
Re: A final word on casting. Tim Rentsch <txr@alumni.caltech.edu> - 2018-12-29 09:22 -0800
Re: A final word on casting. Tim Rentsch <txr@alumni.caltech.edu> - 2019-01-01 13:27 -0800
Re: A final word on casting. Bart <bc@freeuk.com> - 2019-01-02 01:07 +0000
Re: A final word on casting. Bart <bc@freeuk.com> - 2019-01-03 18:55 +0000
Re: A final word on casting. Richard Damon <Richard@Damon-Family.org> - 2019-01-03 22:27 -0500
Re: A final word on casting. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-01-04 16:25 -0500
Re: A final word on casting. Ike Naar <ike@iceland.freeshell.org> - 2018-12-28 19:10 +0000
Re: A final word on casting. James Kuyper <jameskuyper@alumni.caltech.edu> - 2018-12-28 12:33 -0800
Re: A final word on casting. "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-12-23 14:11 -0800
Re: A final word on casting. Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-12-24 02:54 -0800
Re: A final word on casting. fir <profesor.fir@gmail.com> - 2018-12-24 03:24 -0800
Re: A final word on casting. fir <profesor.fir@gmail.com> - 2018-12-24 03:29 -0800
Re: A final word on casting. fir <profesor.fir@gmail.com> - 2018-12-24 03:45 -0800
Re: A final word on casting. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-24 13:44 +0000
Re: A final word on casting. Richard Damon <Richard@Damon-Family.org> - 2018-12-24 08:51 -0500
Re: A final word on casting. Richard Damon <Richard@Damon-Family.org> - 2018-12-23 14:53 -0500
Re: A final word on casting. Robert Wessel <robertwessel2@yahoo.com> - 2018-12-24 09:39 -0600
Re: A final word on casting. Richard Damon <Richard@Damon-Family.org> - 2018-12-24 13:38 -0500
Re: A final word on casting. Manfred <noname@add.invalid> - 2018-12-23 21:22 +0100
Re: A final word on casting. Manfred <noname@add.invalid> - 2018-12-23 21:33 +0100
Re: A final word on casting. James Kuyper <jameskuyper@alumni.caltech.edu> - 2018-12-23 10:56 -0500
Re: A final word on casting. Sjouke Burry <burrynulnulfour@ppllaanneett.nnll> - 2018-12-23 17:18 +0100
Re: A final word on casting. Bart <bc@freeuk.com> - 2018-12-23 20:03 +0000
Re: A final word on casting. "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2018-12-28 14:47 -0500
Re: A final word on casting. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-12-23 12:24 +0000
Re: A final word on casting. Richard Damon <Richard@Damon-Family.org> - 2018-12-23 07:28 -0500
Re: A final word on casting. Tim Rentsch <txr@alumni.caltech.edu> - 2018-12-28 07:50 -0800
Re: A final word on casting. fir <profesor.fir@gmail.com> - 2018-12-23 04:35 -0800
Re: A final word on casting. fir <profesor.fir@gmail.com> - 2018-12-23 04:42 -0800
Re: A final word on casting. fir <profesor.fir@gmail.com> - 2018-12-23 04:52 -0800
Re: A final word on casting. James Kuyper <jameskuyper@alumni.caltech.edu> - 2018-12-23 10:28 -0500
Re: A final word on casting. Barry Schwarz <schwarzb@dqel.com> - 2018-12-23 11:39 -0800
Re: A final word on casting. Ike Naar <ike@iceland.freeshell.org> - 2018-12-24 07:56 +0000
Re: A final word on casting. chanrasjid@gmail.com - 2018-12-24 14:03 -0800
Re: A final word on casting. Barry Schwarz <schwarzb@dqel.com> - 2018-12-24 14:39 -0800
Re: A final word on casting. chanrasjid@gmail.com - 2018-12-24 14:50 -0800
Re: A final word on casting. Keith Thompson <kst-u@mib.org> - 2018-12-24 15:34 -0800
Re: A final word on casting. Keith Thompson <kst-u@mib.org> - 2018-12-24 15:23 -0800
Re: A final word on casting. chanrasjid@gmail.com - 2018-12-24 20:34 -0800
Re: A final word on casting. Keith Thompson <kst-u@mib.org> - 2018-12-24 14:52 -0800
Re: A final word on casting. chanrasjid@gmail.com - 2018-12-24 20:25 -0800
Re: A final word on casting. James Kuyper <jameskuyper@alumni.caltech.edu> - 2018-12-24 17:52 -0500
Re: A final word on casting. luser droog <luser.droog@gmail.com> - 2018-12-24 21:27 -0800
Re: A final word on casting. luser droog <luser.droog@gmail.com> - 2018-12-24 21:39 -0800
Re: A final word on casting. chanrasjid@gmail.com - 2018-12-24 22:36 -0800
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