Funny issue with casting double to ulong

[Patrick Schluter via Digitalmars-d-learn]

On Monday, 3 July 2017 at 05:38:56 UTC, Era Scarecrow wrote:
> On Monday, 3 July 2017 at 03:57:25 UTC, Basile B wrote:
>> 6.251 has no perfect double representation. It's real value is:
>
>  I almost wonder if a BCD, fixed length or alternative for 
> floating point should be an option... Either library, or a hook 
> to change how the FPU works since doubles are suppose to do 
> 16-18 digits of perfect simple floatingpoint for the purposes 
> of money and the like without relying on such imperfect 
> transitions.

IBM zSeries and POWER since POWER6 have BCD floating point unit...