sfc-rs

sfc-rs (rand_sfc) is an implementation of Chris Doty-Humphrey's Small Fast Counting PRNGs written in pure Rust.

This crate provides:

• sfc16
• sfc32
• sfc64

This crate supports version 4 of the SFC algorithms.

[!IMPORTANT] This crate is not part of the Rand project.

Usage

Run the following command in your project directory:

cargo add rand_sfc

Crate features

serde

Enables the serde crate.

no_std support

This crate supports no_std mode.

Documentation

See the documentation for more details.

Minimum supported Rust version

The minimum supported Rust version (MSRV) of this library is v1.85.0.

Source code

The upstream repository is available at https://github.com/sorairolake/sfc-rs.git.

Changelog

Please see CHANGELOG.adoc.

Contributing

Please see CONTRIBUTING.adoc.

Acknowledgment

This crate depends on the rand_core crate created by the Rand project.

The implementation of this crate is based on the reference implementation provided by PractRand version pre0.95, which is licensed under the public domain.

License

Copyright (C) 2025 Shun Sakai (see AUTHORS.adoc)

This library is distributed under the terms of either the Apache License 2.0 or the MIT License.

This project is compliant with version 3.2 of the REUSE Specification. See copyright notices of individual files for more details on copyright and licensing information.