Show HN: LoopMix128 – Fast C PRNG (.46ns), 2^128 Period, BigCrush/PractRand Pass

LoopMix128 is a fast C PRNG I wrote for non-cryptographic tasks.

GitHub (MIT): https://github.com/danielcota/LoopMix128

Highlights:

* ~0.46 ns/value (GCC 11.4, -O3 -march=native), 75% faster than xoroshiro128++.

* Passes TestU01 BigCrush & PractRand (32TB).

* Guaranteed 2^128 period.

* Proven injective (192-bit state) via Z3 SMT solver; allows parallel streams.

* Core requires only stdint.h.

Seeking feedback on design, use cases, or further testing.

Comments URL: https://news.ycombinator.com/item?id=43949134

Points: 3

# Comments: 0

https://github.com/danielcota/LoopMix128