Xoroshiro

public final class Xoroshiro : PRNG

A pseudo-random number generator (PRNG) that implements xoroshiro128+, a successor to xorshift128+ devised by S. Vigna and D. Blackman.

To generate random numbers, create your own instance of Random.Xoroshiro with an internal state seeded from cryptographically secure random bytes:

let random = Random.Xoroshiro()!
let x = random.uniform() as Int

// You can also pass the desired result type as an argument.
let y = random.uniform(Int.self)

if x > y {
  print("Here's a random value between 0 and 42 (inclusive):")
  print(random.uniform(a: 0, b: 42))
} else {
  print("Here's a random value between -42 and 0 (inclusive):")
  print(random.uniform(a: -42, b: 0))
}