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Message-ID: <7ff9b3aa-39f-3ed5-1e2a-d6d1a344daf6@esi.com.au>
Date: Sat, 1 Aug 2026 16:10:20 +1000 (AEST)
From: Damian McGuckin <damianm@....com.au>
To: musl@...ts.openwall.com
Subject: Re: issue in acosh
On Sat, 1 Aug 2026, Paul Zimmermann wrote:
> by the way, before I found this failure, the largest error we found was
> 2.25 ulps for acosh, i.e., the same value as Newlib, OpenLibm and
> FreeBSD, for the exact same input 0x1.0001ff6afc4bap+0 [1]. However,
> these other libraries get it right for x < 0.
These others explicitly return NaN for the case of x < 1 - Damian
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