From: Paul Zimmermann <Paul.Zimmermann@inria.fr>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: libc-alpha@sourceware.org
Subject: Re: Fix the inaccuracy of j0f/y0f/j1f/y1f
Date: Fri, 26 Feb 2021 07:40:01 +0100 [thread overview]
Message-ID: <mweeh3l4ce.fsf@tomate.loria.fr> (raw)
In-Reply-To: <ee2b8e3b-aaaa-214b-dc8a-8ac620abc843@linaro.org> (message from Adhemerval Zanella on Thu, 25 Feb 2021 08:24:12 -0300)
Dear Adhemerval,
> Afaik -mfpmath=sse is the default for x86_64, so I am not sure the
> extension precision on x86_64 s the culprit here.
ok
> I noted that cosf shows a better precision on x86_64 compared to
> other architectures (based on glibc own ulp files), so it might
> be the origin of the difference.
indeed the Bessel functions depend in sincosf.
Paul
prev parent reply other threads:[~2021-02-26 6:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-19 9:02 Paul Zimmermann
2021-02-19 16:44 ` Michael Morrell
2021-02-19 21:15 ` Joseph Myers
2021-02-21 7:37 ` Paul Zimmermann
2021-02-23 19:07 ` Michael Morrell
2021-02-23 19:34 ` Joseph Myers
2021-02-24 18:59 ` Adhemerval Zanella
2021-02-25 10:27 ` Paul Zimmermann
2021-02-25 11:24 ` Adhemerval Zanella
2021-02-26 6:40 ` Paul Zimmermann [this message]
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