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Groups > comp.arch.embedded > #20130
| From | Tauno Voipio <tauno.voipio@notused.fi.invalid> |
|---|---|
| Newsgroups | comp.arch.embedded |
| Subject | Re: two fpu compared |
| Date | 2015-02-19 09:42 +0200 |
| Organization | A noiseless patient Spider |
| Message-ID | <mc444m$44m$1@dont-email.me> (permalink) |
| References | (7 earlier) <mc0rdr$11k$1@speranza.aioe.org> <mc2ci7$2ig$1@dont-email.me> <mc2g0t$8e9$1@speranza.aioe.org> <ckjvfhFltk6U1@mid.dfncis.de> <6v9aealor24m0qs1n3qjhvlov0p05233se@4ax.com> |
On 19.2.15 02:02, Robert Wessel wrote: > On Wed, 18 Feb 2015 18:12:20 +0100, Hans-Bernhard Bröker > <HBBroeker@t-online.de> wrote: > >> Am 18.02.2015 um 17:52 schrieb glen herrmannsfeldt: >> >>> Otherwise, an older favorite was the Cray machine with non-commutative >>> multiply. A*B-B*A might not be zero. >> >> If memory serves Seymour Cray also gained some notoriety for building >> machines where A*1 might not be equal to A. > > > While I'm not sure A*1 was ever not equal to A, there were certainly > cases where A*B was not equal to B*A. > The classical example is 10.0 * 0.1. It is due to 0.1 having an infinitely long binary fraction (001100110011....). -- -TV
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two fpu compared al.basili@gmail.com (alb) - 2015-02-12 08:30 +0000
Re: two fpu compared David Brown <david.brown@hesbynett.no> - 2015-02-12 10:51 +0100
Re: two fpu compared al.basili@gmail.com (alb) - 2015-02-13 14:14 +0000
Re: two fpu compared David Brown <david.brown@hesbynett.no> - 2015-02-13 16:23 +0100
Re: two fpu compared Colin Paul de Gloucester <not_a_real_email@address.com> - 2015-02-13 17:37 +0100
Re: two fpu compared al.basili@gmail.com (alb) - 2015-02-16 08:01 +0000
Re: two fpu compared Colin Paul de Gloucester <not_a_real_email@address.com> - 2015-02-16 11:43 +0100
Re: two fpu compared al.basili@gmail.com (alb) - 2015-02-17 10:35 +0000
Re: two fpu compared David Brown <david.brown@hesbynett.no> - 2015-02-17 12:18 +0100
Re: two fpu compared George Neuner <gneuner2@comcast.net> - 2015-02-17 09:26 -0500
Re: two fpu compared David Brown <david.brown@hesbynett.no> - 2015-02-17 16:47 +0100
Re: two fpu compared Dimiter_Popoff <dp@tgi-sci.com> - 2015-02-17 20:54 +0200
Re: two fpu compared al.basili@gmail.com (alb) - 2015-02-16 07:58 +0000
Re: two fpu compared David Brown <david.brown@hesbynett.no> - 2015-02-16 09:53 +0100
Re: two fpu compared al.basili@gmail.com (alb) - 2015-02-16 09:47 +0000
Re: two fpu compared Richard Damon <Richard@Damon-Family.org> - 2015-02-16 08:27 -0500
Re: two fpu compared Nobody <nobody@nowhere.invalid> - 2015-02-23 00:13 +0000
Re: two fpu compared George Neuner <gneuner2@comcast.net> - 2015-02-13 18:43 -0500
Re: two fpu compared glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-02-14 15:30 +0000
Re: two fpu compared Dimiter_Popoff <dp@tgi-sci.com> - 2015-02-14 23:19 +0200
Re: two fpu compared Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2015-02-14 23:28 +0100
Re: two fpu compared glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-02-15 14:33 +0000
Re: two fpu compared Dimiter_Popoff <dp@tgi-sci.com> - 2015-02-17 20:53 +0200
Re: two fpu compared glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-02-18 01:55 +0000
Re: two fpu compared Dimiter_Popoff <dp@tgi-sci.com> - 2015-02-18 17:54 +0200
Re: two fpu compared glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-02-18 16:52 +0000
Re: two fpu compared Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2015-02-18 18:12 +0100
Re: two fpu compared Robert Wessel <robertwessel2@yahoo.com> - 2015-02-18 18:02 -0600
Re: two fpu compared Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2015-02-19 09:42 +0200
Re: two fpu compared Robert Wessel <robertwessel2@yahoo.com> - 2015-02-19 11:04 -0600
Re: two fpu compared Reinhardt Behm <rbehm@hushmail.com> - 2015-02-19 23:26 +0800
Re: two fpu compared Dimiter_Popoff <dp@tgi-sci.com> - 2015-02-18 19:18 +0200
Re: two fpu compared Dimiter_Popoff <dp@tgi-sci.com> - 2015-02-19 02:28 +0200
Re: two fpu compared glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-02-19 16:29 +0000
Re: two fpu compared Dimiter_Popoff <dp@tgi-sci.com> - 2015-02-21 16:07 +0200
Re: two fpu compared glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-02-12 11:26 +0000
Re: two fpu compared "Boudewijn Dijkstra" <sp4mtr4p.boudewijn@indes.com> - 2015-02-12 12:29 +0100
Re: two fpu compared Dennis <dennis@none.none> - 2015-02-12 09:45 -0600
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