issue in cacoshf?

[Andreas Schwab]

On Sep 11 2024, Paul Zimmermann wrote:

> I get with the GNU libc:
>
> $ gcc -DFOO=acosh check_cacosh2.c -lm
> $ ./a.out 
> Xbest=-0x0p+0 Ybest=-0x0p+0
> libm gives (0x0p+0,0x1.921fb6p+0)
>
> thus we get (0,pi/2), whereas GNU MPC returns (0,-pi/2) instead.
>
> Can someone confirm this is a bug?

Is cacosh actually called with -0-i0?

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Andreas Schwab, SUSE Labs, schwab@suse.de
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