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From: "newbie-02 at gmx dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/28472] pow(10, i) accuracy
Date: Tue, 10 Jan 2023 00:23:23 +0000 [thread overview]
Message-ID: <bug-28472-131-941PoJKe0v@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-28472-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=28472
--- Comment #13 from b. <newbie-02 at gmx dot de> ---
(In reply to joseph@codesourcery.com from comment #12)
> I don't consider special-casing 10 in pow to be reasonable.
As M Welinder pointed out in C#2 it's an IEEE recommendation to have these
values correct, and - again - it's important in rounding other values. Rounding
is the only! weapon a user has against FP-math imprecision, this should be
taken important.
And it fundamentally harms math logic if pow( 10, 23 ) <> 1E+23.
Can't argue about the other points because I don't know enough about CORE,
_builtin ..., IMHO the workaround is independent of such ...
The request is to have correct powers of ten.
How this is achieved is a matter for the experts. It was important to me to
emphasize that it is! important and to show that it is! possible.
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next prev parent reply other threads:[~2023-01-10 0:23 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-18 23:54 [Bug math/28472] New: " mwelinder at gmail dot com
2021-10-19 15:44 ` [Bug math/28472] " joseph at codesourcery dot com
2021-10-19 21:28 ` mwelinder at gmail dot com
2021-10-19 21:42 ` joseph at codesourcery dot com
2021-10-25 8:44 ` newbie-02 at gmx dot de
2021-11-14 5:38 ` newbie-02 at gmx dot de
2022-01-24 21:45 ` mwelinder at gmail dot com
2022-01-24 21:56 ` joseph at codesourcery dot com
2022-09-23 16:33 ` newbie-02 at gmx dot de
2023-01-09 14:43 ` newbie-02 at gmx dot de
2023-01-09 18:35 ` joseph at codesourcery dot com
2023-01-09 21:23 ` newbie-02 at gmx dot de
2023-01-09 21:36 ` joseph at codesourcery dot com
2023-01-10 0:23 ` newbie-02 at gmx dot de [this message]
2024-03-02 22:53 ` vincent-srcware at vinc17 dot net
2024-03-04 14:58 ` wdijkstr at arm dot com
2024-03-04 15:35 ` vincent-srcware at vinc17 dot net
2024-03-04 16:07 ` wdijkstr at arm dot com
2024-03-04 17:09 ` vincent-srcware at vinc17 dot net
2024-03-04 18:27 ` wdijkstr at arm dot com
2024-03-04 19:23 ` vincent-srcware at vinc17 dot net
2024-03-18 21:09 ` newbie-02 at gmx dot de
2024-03-18 22:17 ` wdijkstr at arm dot com
2024-03-20 9:02 ` newbie-02 at gmx dot de
2024-03-20 9:56 ` vincent-srcware at vinc17 dot net
2024-03-20 13:54 ` wdijkstr at arm dot com
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