Struct Pcg32 

pub struct Pcg32 { /* private fields */ }

PCG32 (XSH-RR, 64-bit state, 32-bit output)

Implementations

impl Pcg32

pub fn new(seed: u64, stream: u64) -> Pcg32

the generator of seed on stream (pcg32_srandom_r(seed, stream))

pub fn derive(seed: u64, id: u64) -> Pcg32

a generator for object id under a common seed

pub fn next_u32(&mut self) -> u32

pub fn next_u64(&mut self) -> u64

pub fn below(&mut self, n: u32) -> u32

uniform in 0..n without modulo bias (n = 0 gives 0)

pub fn range(&mut self, lo: i64, hi: i64) -> i64

uniform in lo..=hi

pub fn f64(&mut self) -> f64

uniform in [0, 1) with 53 random bits

pub fn chance(&mut self, num: u32, den: u32) -> bool

true with probability num / den

pub fn chance_ppm(&mut self, ppm: u32) -> bool

true with probability ppm / 1 000 000 (loss and error rates)

pub fn fill(&mut self, out: &mut [u8])

pub fn shuffle<T>(&mut self, v: &mut [T])

Fisher-Yates

pub fn advance(&mut self, delta: u64)

skips delta outputs in O(log delta) (Brown’s jump ahead for LCGs)

Trait Implementations

impl Clone for Pcg32

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Pcg32

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

Formats the value using the given formatter.

impl Eq for Pcg32

impl PartialEq for Pcg32

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Pcg32