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From: Paul Zimmermann <Paul.Zimmermann@inria.fr>
To: newlib@sourceware.org
Subject: accuracy of mathematical functions
Date: Tue, 03 Aug 2021 09:59:17 +0200	[thread overview]
Message-ID: <mwsfzr3qne.fsf@tomate.loria.fr> (raw)

       Hi,

I am about to publish a new version of the comparison of the accuracy of
mathematical functions. This new version will be co-authored with Vincenzo
Innocente and will include two new libraries: Apple Libm and CUDA.

I take the opportunity to check the following issues, which seem to be still
present in the last release (4.1.0) of Newlib that we will use in that update:

* large error for powf (169 ulps)

* sqrtf not correctly rounded for directed rounding modes -> fixed in git version

* large error for pow in double precision (636 ulps)

Are some of these issues fixed in the git version, or are there plans to fix
them?

Best regards,
Paul

PS: the previous version (already with 4.1.0) is available here:
https://members.loria.fr/PZimmermann/papers/accuracy.pdf

             reply	other threads:[~2021-08-03  7:59 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-03  7:59 Paul Zimmermann [this message]
  -- strict thread matches above, loose matches on Subject: below --
2024-02-15 14:54 Accuracy of Mathematical Functions Paul Zimmermann
2023-09-21  7:24 Paul Zimmermann
2023-02-14  8:13 Paul Zimmermann
2022-08-29 10:50 Paul Zimmermann
2022-02-16  8:42 Paul Zimmermann
2021-09-07 15:01 accuracy of mathematical functions Paul Zimmermann
2021-02-05 10:43 Paul Zimmermann
2021-02-05 23:01 ` Brian Inglis
2021-02-05 23:46   ` Joel Sherrill
2021-02-06  0:40     ` Brian Inglis
2021-02-06  6:23   ` Paul Zimmermann

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