Is there a good lib out there to handle large integer of know size ?

[Andrei Alexandrescu via Digitalmars-d]

On 1/9/16 6:31 AM, rumbu wrote:
> Here is what I've done as a side project for a decimal data type:
>
> https://github.com/rumbu13/fixed/blob/master/src/fixedtest/fixed.d

Who can champion ONE fixed large integer library for Phobos? -- Andrei