neco-rand

Deterministic non-cryptographic random generators and stable bucket assignment.

Use this crate for simulation, sampling, and deterministic cohort splitting. Use cryptographic key handling, secure nonces, and security-sensitive random generation in dedicated cryptographic random crates.

Features

• SplitMix64 seed expansion
• Xoroshiro128Plus deterministic PRNG
• Stable bucket assignment from key + experiment + salt

Usage

use neco_rand::{bucket, SplitMix64, Xoroshiro128Plus};

let mut seeder = SplitMix64::new(42);
let seed = seeder.next_u64();

let mut rng = Xoroshiro128Plus::new(seed);
let value = rng.next_f64();

let bucket_index = bucket::assign_bucket(b"user-1", b"exp-a", b"salt", 100);

assert!((0.0..1.0).contains(&value));
assert!(bucket_index < 100);

API

License

MIT