# rand::weak_rng - Rust
API documentation for the Rust `weak_rng` fn in crate `rand`.
Keywords: rust, rustlang, rust-lang, weak_rng

# Function rand::weak_rng [−] [src]

    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.

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