# FCRC

Fast-CRC is a generic CRC implementation using SIMD instructions when available and a fallback when not.

Feature List:

- [x] A `reference` implementation that operates bit-by-bit. Correct, concise, and readable.
- [x] A built in library of known CRC parameters, and the ability to easily use custom ones.
- [x] A `slice_by` implementation that uses lookup tables of size `256 * N` for `N >= 1`. This is the 'standard' implementation.
- [x] Excellent test coverage for each implementation and each of the well known algorithms, against the reference implementation and against other rust CRC crates.
- [x] Benchmarks againts each implementation and against other rust CRC crates.
- [x] Comparable performance to other CRC crates.
- [ ] An `x86` implementation using `sse4.1` and `pclmulqdq` intrinsics, base on the intel whitepaper on the topic.
- [ ] An `x86` implementation using `sse4.1` crc intrinsics, when the selected algorithm is correct.
- [ ] An `aarch64` implementation using `crc` intrinsics, when the selected algorithm is correct.

Benchmarking results to be added to the README.