Struct SystemRng 

pub struct SystemRng { /* private fields */ }

System RNG using host entropy (non-deterministic).

This implementation uses system time and memory addresses for entropy. For reproducible testing, use SeededRng instead.

Implementations

impl SystemRng

pub fn new() -> Self

Create a new system RNG seeded from current time.

Trait Implementations

impl Debug for SystemRng

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SystemRng

fn default() -> SystemRng

Returns the “default value” for a type.

impl Rng for SystemRng

fn next_u64(&mut self) -> u64

Generate a random u64.

fn fork(&mut self) -> Self

Fork into an independent RNG stream.

fn next_u32(&mut self) -> u32

Generate a random u32.

fn next_bool(&mut self) -> bool

Generate a random boolean.

fn next_fixed(&mut self) -> FixedQ32

Generate a random FixedQ32 value in [0, 1).

fn next_u64_bounded(&mut self, bound: u64) -> u64

Generate a random u64 in the range [0, bound).

fn choose<'a, T>(&mut self, slice: &'a [T]) -> Option<&'a T>

Choose a random element from a slice.

fn duration_between(&mut self, min: Duration, max: Duration) -> Duration

Generate a random duration between min and max.