[cfe-commits] Patch for evaluating FP constant expressions

[Neil Booth]

Chris Lattner wrote:-

> >I needed this to support negation of FP literals, which is pretty  
> >unambiguous. It looks like GCC evaluates more complex constant  
> >expressions too, so I put in support for some of that (though  
> >rounding mode is an issue). All of this is modeled on the work for  
> >integer expressions and uses APFloat.
> 
> Very interesting, I didn't realize that this was non-conforming:
> 
> double x = -1.0;

I don't understand?  This is quite OK of course, and required to be
accepted.

I see a lot of confusion about initializers.

Neil.