third_party/rust/crc32fast/src

Name	Description	Size
baseline.rs		3347
combine.rs	even-power-of-two zeros operator	1986
lib.rs	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: ```rust 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`]: ```rust 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 `x86` using `sse` and `pclmulqdq` instructions Calling the [`Hasher::new`] constructor at runtime will perform a feature detection to select the most optimal implementation for the current CPU feature set.	6540
specialized
table.rs		54340