xxhash-rust

Implementation of xxHash in Rust

Version corresponds to xxHash releases

Each algorithm is implemented via feature, allowing precise control over code size.

Features:

• xxh32 - Enables 32bit algorithm. Suitable for x86 targets
• const_xxh32 - const fn version of xxh32 algorithm
• xxh64 - Enables 64 algorithm. Suitable for x86_64 targets
• const_xxh64 - const fn version of xxh64 algorithm
• xxh3 - Enables xxh3 family of algorithms, superior to xxh32 and xxh64 in terms of performance.
• const_xxh3 - const fn version of xxh3 algorithm

HW acceleration

Similar to reference implementation, crate implements various SIMDs in xxh3 depending on provided flags. All checks are performed only at compile time, hence user is encouraged to enable these accelerations (for example via -C target_cpu=native)

Used SIMD acceleration:

• SSE2 - widely available, can be safely enabled in 99% of cases. Enabled by default in x86_64 targets.
• AVX2;

Version note

Crate 0.8.0 contains invalid API and hence new increment was required. As 0.8.0 is yanked, I consider it non-existing and hence 0.8.1 is the only version with stable API

In order to keep up with original implementation version I'm not planning to bump major/minor until C implementation does so.