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lemire/SwiftWyhash

Fast random number generator in pure Swift

25

stars

34

commits

Swift

primary language

May 26, 2025

updated

README

SwiftWyhash

This is Swift port of pseudorandom number generator wyrand from wyhash by Wang Yi. On 64-bit hardware, it is should be effectively faster than any other commonly available random number generator. It meets quality standards: it passes Big Crunch.

It conforms to RandomNumberGenerator protocol.

Usage:

var gen = WyRand(seed: 42)
gen.next() // generates a 64-bit random number

(1...10).shuffled(using: &gen)

For a benchmark, see SwiftWyhashBenchmark.

Further reading: The fastest conventional random number generator that can pass Big Crush?

Contributors

lemire

19 commits

palimondo

15 commits

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lemire/SwiftWyhash

Fast random number generator in pure Swift

25

stars

34

commits

Swift

primary language

May 26, 2025

updated

README

SwiftWyhash

This is Swift port of pseudorandom number generator wyrand from wyhash by Wang Yi. On 64-bit hardware, it is should be effectively faster than any other commonly available random number generator. It meets quality standards: it passes Big Crunch.

It conforms to RandomNumberGenerator protocol.

Usage:

var gen = WyRand(seed: 42)
gen.next() // generates a 64-bit random number

(1...10).shuffled(using: &gen)

For a benchmark, see SwiftWyhashBenchmark.

Further reading: The fastest conventional random number generator that can pass Big Crush?

Similar repos

eldruin/wyhash-rs

wyhash fast portable non-cryptographic hashing algorithm and random number generator in Rust

103

wangyi-fudan/wyhash

The FASTEST QUALITY hash function, random number generators (PRNG) and hash map.

1,147

rust-lang-nursery/rand

A Rust library for random number generation.

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rust-random/rand

A Rust library for random number generation.

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haskellari/splitmix

Pure Haskell implementation of SplitMix pseudo-random number generator

26

orisano/wyhash

A pure-Go wyhash implementation.

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tc39/proposal-seeded-random

Proposal for a new SeededPRNG class that yields reproducible sequences of random numbers.

198

lemire/clhash

C library implementing the ridiculously fast CLHash hashing function

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Contributors

lemire

19 commits

palimondo

15 commits

Languages

Swift

100.0%