Union copy

[Dicebot]

On Wednesday, 23 October 2013 at 15:55:59 UTC, Luís Marques wrote:
> On Wednesday, 23 October 2013 at 15:21:20 UTC, Dicebot wrote:
>> I am afraid you will need to investigate IEEE spec on NaN 
>> assignment here to tell if this is a bug or valid behavior. I 
>> have made a quick check but it does not say anything about 
>> preserving NaN payload.
>
> I checked, it is not the payload of the NaN that is being 
> changed.

I have reproduces the case and it is payload for sure (did you 
took endianness into account?)