Struct ThreadLocalRng

pub struct ThreadLocalRng;

A thread-local random number generator that can be used without synchronization.

This is useful for parallel processing where each thread needs its own RNG. It uses the built-in ThreadRng from the rand crate, which is automatically seeded from the system entropy and is thread-local.

Implementations

impl ThreadLocalRng

pub fn gen_range<T, R>(range: R) -> T

where T: SampleUniform, R: SampleRange<T>,

Generates a random number in the given range.

Arguments

• range - The range to generate a random number in.

Returns

A random number in the given range.

pub fn fetch_uniform(from: f32, to: f32, num: usize) -> VecDeque<f32>

Generates a specified number of random floating-point numbers within the given range.

Parameters

• from: The lower bound of the range (inclusive).
• to: The upper bound of the range (exclusive).
• num: The number of random numbers to generate.

Returns

A VecDeque containing the generated random numbers.

pub fn get_fresh_rng()

Gets a new instance of the thread-local RNG.

This effectively reseeds the RNG by getting a fresh instance from the system. This is useful after a fork to ensure that child processes have different random sequences.

Note

The built-in ThreadRng doesn’t have a direct reseed method, but getting a new instance via thread_rng() ensures we get a properly seeded RNG.