[Cfp-interest 2275] Re: tgamma()

[Damian McGuckin]

On Fri, 19 Nov 2021, Fred J. Tydeman wrote:

> Should 7.12.8.4 tgamma()
>
> A domain error or pole error may occur if x is a negative integer or zero.
>
> be changed to
>
> A domain error shall occur if x is a negative integer.
> A pole error shall occur is x is zero.

Far clearer. I like it. That said, There is no errno which is a pole 
error.

> The Austin Group / POSIX thinks IEC 60559 says tgamma(negative integer) 
> is a domain error (raise invalid, return NaN).
>
> https://austingroupbugs.net/view.php?id=1461
>
> I am not finding any "gamma" in IEEE-754-2019

Ditto. I thought it was long gone

Stay safe - Damian

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