unnormal Intel 80-bit long doubles and isnanl

[Siddhesh Poyarekar]

On 11/27/20 5:01 PM, Florian Weimer wrote:
> I think the last part (the “bug”) is new.  I welcome a consensus along
> those lines.  I just want to highlight this aspect.

Should we consider fixing behaviour if the bug manifests in a user 
application and not in glibc itself?  i.e. a crash because glibc either 
returned the unnormal or misclassified the unnormal number?

At the minimu ISTM that we should at least make the classification 
consistent with gcc.

Siddhesh