Re: mysterious remquo bug

[Greg Troxel <gdt%lexort.com@localhost>]

Robert Elz <kre%munnari.OZ.AU@localhost> writes:

>     Date:        Sun, 15 Sep 2024 19:53:54 -0400
>     From:        Greg Troxel <gdt%lexort.com@localhost>
>     Message-ID:  <rmijzfc8odp.fsf%s1.lexort.com@localhost>
>
>   | C99/POSIX define remquo:
>   |   https://pubs.opengroup.org/onlinepubs/9799919799/functions/remquo.html
>
> I know really nothing about any of this, but that's still the 2018
> version of POSIX, and I do recall that some of the language in the
> spec for remquo() was tightened in the 2024 edition.

remquo is from C99 and POSIX defers.

The 2024 version does have additional return value notes about subnormal
results being exact and NaN.   But indeed we aren't near those
descriptions.