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use core::hash::{Hash, Hasher};
use wyhash::WyHash;
pub trait Noise: Sized {
type Value;
type Unseeded = Self;
}
pub trait Seedable: Sized {
type Seed;
type Seeded: Seeded<Config = Self>;
fn seed(self, seed: Self::Seed) -> Self::Seeded;
}
pub trait Seeded: Sized {
type Config: Seedable<Seeded = Self>;
}
pub trait NoiseDomain<Arg>: Noise {
fn noise(&self, arg: Arg) -> Self::Value;
}
pub trait SplitSeed {
fn split(&self, n: usize) -> Self;
}
impl SplitSeed for u64 {
fn split(&self, n: usize) -> Self {
let mut hasher = WyHash::with_seed(*self);
n.hash(&mut hasher);
hasher.finish()
}
}