Paul Zimmermann <Paul.Zimmermann@inria.fr> writes:

>        Hi,
>
> in https://sourceware.org/pipermail/newlib/2020/017920.html I reported an
> issue with tgammaf(-0).
>
> With Newlib 3.3.0, there seems to be the same issue for negative subnormal
> values of the input, where tgammaf gives +inf instead of -inf.

We've been fixing a bunch of gamma problems; this is one that got missed
when the library is configured to report errno.