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Message-Id: <mwzgfdansp.fsf@tomate.loria.fr>
Date: Mon, 05 Sep 2022 16:39:02 +0200
From: Paul Zimmermann <Paul.Zimmermann@...ia.fr>
To: Szabolcs Nagy <nsz@...t70.net>
Cc: dalias@...c.org, musl@...ts.openwall.com
Subject: Re: Re: integration of CORE-MATH routines into Musl?
Dear Szabolcs,
> when i worked on exp and log i noticed that for single prec it is
> easy to do correct rounding with only minor overhead, but it required
> either a bit bigger lookup table or a bit bigger polynomial vs going
> for < 1 ulp error only.
please have a look at https://gitlab.inria.fr/core-math/core-math/-/blob/master/src/binary32/exp/expf.c: no big lookup table, degree 5 only.
Paul
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