3 months of waiting...

[Joseph Rushton Wakeling]

On Saturday, 8 February 2020 at 17:21:04 UTC, Jonathan Marler 
wrote:
> for 32-bit floats it doesn't take too long to do an exhaustive 
> test (maybe 30 minutes or so).  I did this with my port of the 
> "ryu" float to string implementation 
> (https://github.com/dragon-lang/mar/blob/master/src/mar/ryu.d).
>  That being said, an exhaustive 64-bit test may not finish 
> until the inevitable heat death of the universe :)

It feels intuitively that there's got to be a more effective way 
of approaching this than brute-forcing all the cases, or randomly 
selecting a sufficient subset.

I would anticipate that there has to be a well-defined subset of 
cases such that, if the formatter works for those, it'll work for 
everything else.

(Yes, I get that in this case you're trying to compare the 
behaviour of 2 different functions, but I think the principle 
should still apply.)