Is there any implementation of a 128bit integer?

[Saurabh Das]

The cent and ucent types are reserved for the future. Is there 
any knowledge/timeline on when they might be implemented?

Currently, is there a useable 128bit integer type in DMD/LDC/GDC?

Or perhaps a library that implements 128bit integers? I've come 
across gfm:integers 
(https://github.com/d-gamedev-team/gfm/blob/master/integers/gfm/integers/wideint.d). Are there any other libraries?

Thanks,
Saurabh