Expand description
Fast, SIMD-accelerated CRC32 (IEEE) checksum computation.
Usage
Simple usage
For simple use-cases, you can call the hash() convenience function to
directly compute the CRC32 checksum for a given byte slice:
let checksum = crc32fast::hash(b"foo bar baz");Advanced usage
For use-cases that require more flexibility or performance, for example when
processing large amounts of data, you can create and manipulate a Hasher:
use crc32fast::Hasher;
let mut hasher = Hasher::new();
hasher.update(b"foo bar baz");
let checksum = hasher.finalize();Performance
This crate contains multiple CRC32 implementations:
- A fast baseline implementation which processes up to 16 bytes per iteration
- An optimized implementation for modern
x86usingsseandpclmulqdqinstructions
Calling the Hasher::new constructor at runtime will perform a feature detection to select the most
optimal implementation for the current CPU feature set.
Structs
Represents an in-progress CRC32 computation.
Functions
Computes the CRC32 hash of a byte slice.