Movement against float.init being nan

[Adam D Ruppe]

On Saturday, 20 August 2022 at 10:26:08 UTC, Nick Treleaven wrote:
> On Saturday, 20 August 2022 at 03:12:43 UTC, Steven 
> Schveighoffer wrote:
>> You can't even `assert(x != double.init)`. You have to use an 
>> esoteric function `isNaN` for that.
>
> Actually, you can use `is`:
> ```d
> static assert(float() is float.nan);
> ```

That works for float.init specifically, but if you've done some 
operation on it and ended up with a nan, that will not 
necessarily be true since nans come in several bit patterns.