Is there any implementation of a 128bit integer?

[Era Scarecrow]

On Friday, 8 July 2022 at 15:32:44 UTC, Rob T wrote:
> https://forum.dlang.org/post/mailman.10914.1566237225.29801.digitalmars-d-learn@puremagic.com
>
> In case someone comes across this old thread
>
> https://dlang.org/phobos/core_int128.html

There was a discussion on this not long ago. Walter tried 
implementing it recently too, though I'm guessing he gave up.

https://forum.dlang.org/thread/wuiurmxvqjcuybfipvqj@forum.dlang.org

There's multiple libraries, one of which i wrote which tries to 
address this issue.

  One thing you can try doing is using BigInt, and then reducing 
to 128bit if/when you need to store the result. Apparently a 
number of compilers and back-ends already know how to handle 
128bit types (*and maybe larger*), but it's a matter of just 
putting it in the D frontend so it generates the appropriate 
calls.

https://github.com/d-gamedev-team/gfm/blob/master/integers/gfm/integers/wideint.d

https://github.com/rtcvb32/Side-Projects/tree/master/arbitraryint