Cargo.toml

[package]
name = "rand_experiment"
version = "0.1.0"
authors = ["Simon Coffey <simon.coffey@futurelearn.com>"]
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
rand = "0.7.0-pre.1"
rand_xoshiro = "0.3.0"

main.rs

use rand::prelude::*;
use rand_xoshiro::rand_core::SeedableRng;
use rand_xoshiro::Xoshiro256StarStar;

fn mygen<R: Rng>(rng: &mut R) -> [f64; 3] {
    rng.gen()
}

fn main() {
    // let mut rng = StepRng::new(2, 1);
    let mut rng = Xoshiro256StarStar::seed_from_u64(0);

    for _ in 0..100 {
        let x = mygen(&mut rng);
        println!("Random: {:?}", x);
    }
}