Struct Xorshift64 

pub struct Xorshift64 { /* private fields */ }

A simple deterministic xorshift64 pseudo-random number generator.

This avoids any dependency on external random number crates while providing reproducible sequences suitable for disorder configuration generation.

Implementations

impl Xorshift64

pub fn new(seed: u64) -> Self

Create a new PRNG with the given seed.

The seed must be non-zero; if zero is provided it is replaced with a default non-zero value.

pub fn next_u64(&mut self) -> u64

Generate the next raw u64 value.

pub fn next_f64(&mut self) -> f64

Generate a uniform f64 in [0, 1).

pub fn next_normal_pair(&mut self) -> (f64, f64)

Generate a standard-normal f64 using the Box-Muller transform.

Returns a pair of independent normal samples.

pub fn next_normal(&mut self) -> f64

Generate a single standard-normal f64.

pub fn next_unit_vector(&mut self) -> Vector3<f64>

Generate a uniform random unit vector on the sphere (isotropic).

Uses the Marsaglia method: pick (x1, x2) uniform in the unit disk, then map to the sphere.

Trait Implementations

impl Clone for Xorshift64

fn clone(&self) -> Xorshift64

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Xorshift64

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

Formats the value using the given formatter.