From: Vincent Lefevre <vincent+gcc@vinc17.org>
To: gcc@gcc.gnu.org
Subject: Re: What is wrong with Bugzilla? [Was: Re: GCC and Floating-Point]
Date: Tue, 31 May 2005 23:30:00 -0000 [thread overview]
Message-ID: <20050531194340.GC3541@ay.vinc17.org> (raw)
In-Reply-To: <20050531173048.GJ7663@sunsite.mff.cuni.cz>
On 2005-05-31 19:30:48 +0200, Jakub Jelinek wrote:
> IEEE 754 is not mandated by the ISO C{90,99} standards and there are indeed
> platforms where float and double are not using IEEE 754 single resp. double
> precision formats.
But without IEEE-754 support, the ISO C99 standard is just a big joke
concerning floating point: almost nothing is guaranteed. And yes,
I know that there are platforms without IEEE-754 support, where a
multiplication by 1.0 may yield an overflow...
--
Vincent Lefèvre <vincent@vinc17.org> - Web: <http://www.vinc17.org/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.org/blog/>
Work: CR INRIA - computer arithmetic / SPACES project at LORIA
next prev parent reply other threads:[~2005-05-31 19:43 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-28 17:10 Uros Bizjak
2005-05-28 23:02 ` Scott Robert Ladd
2005-05-28 23:28 ` Daniel Berlin
2005-05-28 23:29 ` William Beebe
2005-05-29 4:47 ` Scott Robert Ladd
2005-05-29 18:32 ` Kai Henningsen
2005-05-29 18:52 ` William Beebe
2005-05-29 19:24 ` What is wrong with Bugzilla? Russ Allbery
2005-05-30 16:32 ` William Beebe
2005-05-30 19:22 ` Russ Allbery
2005-05-30 15:35 ` What is wrong with Bugzilla? [Was: Re: GCC and Floating-Point] Kai Henningsen
2005-05-31 3:50 ` chris jefferson
2005-05-31 5:56 ` Gary Funck
2005-05-31 6:04 ` Paul Brook
2005-05-30 15:39 ` Daniel Berlin
2005-05-29 1:30 ` Vincent Lefevre
2005-05-29 15:57 ` Giovanni Bajo
2005-05-29 18:05 ` Michael Veksler
2005-05-30 15:34 ` Vincent Lefevre
2005-05-30 15:48 ` Daniel Berlin
2005-05-30 15:31 ` Vincent Lefevre
[not found] ` <26669933.1117479096256.JavaMail.root@dtm1eusosrv72.dtm.ops.eu.uu.net>
2005-05-30 21:17 ` Toon Moene
2005-05-31 11:24 ` Robert Dewar
2005-06-06 21:47 ` Laurent GUERBY
2005-06-06 23:23 ` Robert Dewar
2005-06-09 7:44 ` Vincent Lefevre
2005-05-31 12:51 ` Vincent Lefevre
2005-05-31 13:17 ` Andreas Schwab
2005-05-31 13:44 ` Vincent Lefevre
2005-05-31 14:32 ` Andreas Schwab
2005-05-31 15:10 ` Vincent Lefevre
2005-05-31 15:58 ` Andreas Schwab
2005-05-31 16:53 ` Scott Robert Ladd
2005-05-31 17:03 ` Andreas Schwab
2005-05-31 18:40 ` Vincent Lefevre
2005-05-31 19:28 ` Jakub Jelinek
2005-05-31 23:30 ` Vincent Lefevre [this message]
2005-05-31 18:35 ` Vincent Lefevre
2005-05-31 17:44 ` Vincent Lefevre
2005-05-31 20:11 ` Andreas Schwab
2005-05-31 23:53 ` Vincent Lefevre
[not found] ` <jefyw3jguf.fsf@sykes.suse.de>
[not found] ` <20050531224258.GJ3541@ay.vinc17.org>
[not found] ` <jemzqb2eb2.fsf@sykes.suse.de>
2005-06-01 0:23 ` Vincent Lefevre
2005-06-01 8:42 ` Andreas Schwab
2005-05-31 17:21 ` Mike Stump
2005-05-31 17:44 ` Dave Korn
2005-06-01 1:57 ` Marcin Dalecki
2005-05-31 19:27 ` Vincent Lefevre
2005-05-31 19:58 ` Mike Stump
2005-05-31 23:40 ` Vincent Lefevre
2005-06-01 5:59 ` Alan Modra
2005-06-01 7:21 ` Vincent Lefevre
2005-06-01 17:32 ` Mike Stump
2005-06-01 18:01 ` Daniel Berlin
2005-06-01 18:33 ` Mike Stump
2005-05-29 20:13 ` Joseph S. Myers
2005-05-29 20:18 ` Haren Visavadia
2005-05-30 15:40 ` Daniel Berlin
2005-05-30 15:31 ` Vincent Lefevre
2005-05-30 20:12 ` Haren Visavadia
2005-05-30 20:13 ` Robert Dewar
2005-05-30 20:34 ` Haren Visavadia
2005-05-30 20:46 ` Robert Dewar
2005-05-30 21:10 ` Haren Visavadia
2005-05-31 9:11 ` Robert Dewar
2005-05-31 12:33 ` Vincent Lefevre
2005-05-31 12:48 ` Andrew Haley
2005-05-31 13:35 ` Vincent Lefevre
2005-05-31 14:08 ` Vincent Lefevre
2005-06-22 19:44 ` What is wrong with Bugzilla? Gerald Pfeifer
2005-05-29 7:33 ` What is wrong with Bugzilla? [Was: Re: GCC and Floating-Point] Ross Smith
2005-05-29 7:51 ` Joe Buck
2005-05-29 9:56 ` R Hill
2005-05-30 17:03 ` What is wrong with Bugzilla? Zack Weinberg
2005-05-30 19:39 ` Gary Funck
2005-05-30 15:48 ` What is wrong with Bugzilla? [Was: Re: GCC and Floating-Point] Daniel Berlin
2005-05-31 7:40 ` R Hill
2005-05-31 12:04 ` What is wrong with Bugzilla? Russ Allbery
2005-05-31 12:08 ` R Hill
2005-05-31 17:14 ` Dave Korn
2005-05-31 17:14 ` Daniel Berlin
2005-05-31 17:43 ` Dave Korn
2005-05-31 19:18 ` Daniel Berlin
2005-05-31 19:43 ` Dave Korn
2005-05-31 17:22 ` What is wrong with Bugzilla? [Was: Re: GCC and Floating-Point] Hugh Sasse
2005-05-29 12:54 ` Haren Visavadia
2005-05-29 15:19 ` Michael Veksler
2005-05-29 15:38 ` Giovanni Bajo
2005-05-29 18:16 ` Michael Veksler
2005-05-30 16:07 ` Daniel Berlin
2005-05-30 15:36 ` Michael Veksler
2005-05-30 15:28 ` Daniel Berlin
2005-05-30 15:28 ` Daniel Berlin
2005-05-29 17:23 ` Haren Visavadia
2005-05-30 15:25 ` Joe Buck
2005-05-30 15:31 ` Vincent Lefevre
2005-05-30 15:43 ` Daniel Berlin
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