bug#37140: 27.0.50; calc gives "Wrong type argument: number-or-marker-p, inf" to many operations

[Eli Zaretskii]

> From: Mattias Engdegård <mattiase@acm.org>
> Date: Sat, 24 Aug 2019 14:08:23 +0200
> Cc: 37140@debbugs.gnu.org, Noam Postavsky <npostavs@gmail.com>,
>         Eli Zaretskii <eliz@gnu.org>
> 
> It is surprising that using -Ofast makes the compiler incapable of computing 
> sqrt(5.0).

Calc's 'Q' doesn't call sqrt, though, it is much more complicated.