From: Paul Zimmermann <Paul.Zimmermann@inria.fr>
To: newlib@sourceware.org
Subject: regression in Newlib 4.2.0
Date: Fri, 04 Feb 2022 05:36:21 +0100 [thread overview]
Message-ID: <mwzgn76yey.fsf@tomate.loria.fr> (raw)
Hi,
I noticed a regression in Newlib 4.2.0:
Checking exp with newlib-4.2.0.20211231
MPFR library: 4.1.0
MPFR header: 4.1.0 (based on 4.1.0)
libm wrong by up to 1.94e+04 ulp(s) for x=0x1.62e302p+6
exp gives inf
mpfr_exp gives 0x1.ff691ep+127
Total: errors=17982998 (0.42%) errors2=151 maxerr=1.94e+04 ulp(s)
The largest error for expf in Newlib 4.1.0 was 0.911 ulps
(https://members.loria.fr/PZimmermann/papers/accuracy.pdf).
Best regards,
Paul
next reply other threads:[~2022-02-04 4:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-04 4:36 Paul Zimmermann [this message]
2022-02-09 13:52 ` [PATCH] Fix expf overflow limit Andoni Arregi
2022-02-10 15:01 ` Corinna Vinschen
2022-02-10 15:38 ` Paul Zimmermann
2022-02-09 14:27 ` regression in Newlib 4.2.0 Andoni Arregi
2022-02-05 5:30 Paul Zimmermann
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