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From: Paul Zimmermann <Paul.Zimmermann@inria.fr>
To: newlib@sourceware.org
Cc: vincenzo.innocente@cern.ch, riemannic@gmail.com
Subject: Accuracy of Mathematical Functions
Date: Thu, 21 Sep 2023 09:24:07 +0200	[thread overview]
Message-ID: <p9u0y1h0m1k8.fsf@coriandre.loria.fr> (raw)

       Hi,

we have updated our comparison:

https://members.loria.fr/PZimmermann/papers/accuracy.pdf

This is a new version with updated versions of the different libraries and:

* the Microsoft math library is now included (it was clearly missing)
* we also added the FreeBSD math library
* and we added some new C23 functions (acospi, cospi, ...) which are available
  in the Intel and FreeBSD math libraries

This version uses the same Newlib version (4.3.0) as the previous one,
thus there is no much change for Newlib.

In particular the regression for tgammaf I reported on February 8 is still
there:

https://sourceware.org/pipermail/newlib/2023/020171.html

Same for the huge error in pow reported on February 7:

https://sourceware.org/pipermail/newlib/2023/020164.html

Corinna, since you asked, a correctly rounded version is available here:

https://gitlab.inria.fr/core-math/core-math/-/blob/master/src/binary64/pow/pow.c

Best regards,
Paul Zimmermann

             reply	other threads:[~2023-09-21  7:24 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-21  7:24 Paul Zimmermann [this message]
  -- strict thread matches above, loose matches on Subject: below --
2024-02-15 14:54 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
2021-08-03  7:59 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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