Complete floating point literals

[bearophile]

Caligo:

> while we are at it, let's get rid of this too:
> 
> class _{ }
> 
> why would anyone want to name a class or a variable _ ??

I use _ now and then in debugging as variable name when I don't care for the name itself (but this is not a very good practice otherwise).
While in the years "incomplete"  floating point literals have caused me some small troubles, a _ class/struct/union name has caused me none of them, so I suggest to not change this.

Bye,
bearophile