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

[Eli Zaretskii]

> Date: Sat, 24 Aug 2019 15:34:53 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 37140@debbugs.gnu.org, huszaghmatt@gmail.com, npostavs@gmail.com
> 
> > 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.

To clarify: I meant to say that 'Q' doesn't _just_ call 'sqrt'.  It
does eventually, but it does quite a lot before that.