From: Paul Zimmermann <Paul.Zimmermann@inria.fr>
To: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Cc: michael.hudson@canonical.com, joseph@codesourcery.com,
libc-alpha@sourceware.org
Subject: Re: [PATCH] Ensure calculations happen with desired rounding mode in y1lf128
Date: Mon, 22 Aug 2022 14:28:57 +0200 [thread overview]
Message-ID: <mw8rngpily.fsf@tomate.loria.fr> (raw)
In-Reply-To: <AM5PR0801MB1668EC9F8A41F189B0C0B191836A9@AM5PR0801MB1668.eurprd08.prod.outlook.com> (message from Wilco Dijkstra via Libc-alpha on Wed, 17 Aug 2022 11:53:43 +0000)
> Rewriting this function would not be trivial, but the math functions that are already
> rewritten (like exp, pow, log) prove you can get fast and accurate results without
> ever needing rounding mode changes.
indeed, you can even get correct rounding (for all rounding modes) faster than
the current glibc implementations. See https://hal.inria.fr/hal-03721525
for example, or the current LLVM libc implementations (cf bottom table of
https://core-math.gitlabpages.inria.fr/).
Paul Zimmermann
next prev parent reply other threads:[~2022-08-22 12:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-12 12:28 Wilco Dijkstra
2022-08-15 20:59 ` Joseph Myers
2022-08-17 4:23 ` Michael Hudson-Doyle
2022-08-17 11:53 ` Wilco Dijkstra
2022-08-17 16:52 ` Joseph Myers
2022-08-22 12:28 ` Paul Zimmermann [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-08-12 0:05 Michael Hudson-Doyle
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