[5/5] math: Sync atanh with CORE-MATH

[Paul Zimmermann]

ok, but why does it break the atanh patch and not the log2p1f one?

Paul

> Date: Mon, 2 Mar 2026 09:42:14 -0300
> From: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
> Organization: Linaro
> 
> 
> 
> On 02/03/26 07:07, Paul Zimmermann wrote:
> >        Hi,
> > 
> > this patch fails one bot test:
> > 
> > https://www.delorie.com/trybots/32bit/57055/
> > 
> > However I don't see any relation with atanh,
> > since the failures are in log2p1f:
> > 
> > https://www.delorie.com/trybots/32bit/57055/math-test-float-log2p1.out
> > 
> > Paul
> 
> I think this is due a missing fix that I did on CORE-MATH and forgot
> to actually do in glibc [1].
> 
> [1] https://sourceware.org/pipermail/libc-alpha/2026-January/174670.html
>