The NaN of types (in D)

[Ola Fosheim Grøstad]

On Monday, 12 October 2020 at 14:11:22 UTC, Paul Backus wrote:
> By contrast, NaN will not crash your program if you forget to 
> check for it before using it in an expression.

That depends. It is not uncommon to have two sets of floating 
point operations with/without exceptions. You also have something 
called signalling NaN (sNaN).

Anyway, the correctness issues in floating point expressions are 
quiet complicated in reality.