128-bit integers are available in nightly Rust

[FaultyRAM]

u128 and i128 were added in rust-lang/rust/pull/38482. They're currently behind the i128_type feature gate.

[robojeb]

I have looked into supporting rust native u128 on nightly but there are some issues with the Rand crate not supporting rand for u128. This prevents implementing Rand for PCG which use the u128.

So for now I think I am going to stick with extprim based u128. If the rand crate implements Rand for u128 behind some feature flag I can look into this issue again.

[TimNN]

@robojeb: I'm curious, but why does rand need to support u128 for you to use u128 internally in the pcg implementation?

I think the request here was to just replace the use of extprim::u128 with rust's native u128 type.

[clamydo]

For reference rust-random/rand#140

[robojeb]

The latest version of the crate now supports u128 internals.
The big blocker was num-traits support which lets me go to fully generic code instead of lots of macros.

(Sorry I feel I am a bad maintainer, I am not used to being in charge and I have been popping in and out)