librscrc

Librscrc is a collection of crc32 algorithms with support for various approaches like simd and table based lookup and custom polynomial implemented in rust.

Simd is currently supported on the following architectures

• x86
• x86_64
• aarch64

Unsafe code is used for calls to intrinsics. These can be opted out by setting default-features = false in Cargo.toml, there by disabling simd and hardware crc intrinsics support.

Performance

Your mileage may vary based on the hardware used. This section is meant to only give comparison of various approaches.

• Nightly compiler is required to use hardware crc instructions on aarch64 with feature flag "nightly" enable.
• Simd and hardware instructions are used if the required cpu features are detected at run time. In case it's not found, it falls back to lookup based approach.
• Simd approach is based on the paper published by intel