Function rand::weak_rng

pub fn weak_rng() -> XorShiftRng

Create a weak random number generator with a default algorithm and seed.

It returns the fastest Rng algorithm currently available in Rust without consideration for cryptography or security. If you require a specifically seeded Rng for consistency over time you should pick one algorithm and create the Rng yourself.

This will read randomness from the operating system to seed the generator.