Crate crc32fast_lib

crc32fast-lib

Fast, SIMD-accelerated CRC-32/ISO-HDLC (aka crc32) checksum computation in Rust exposed as a C-compatible shared library.

Results in a dramatic performance improvement. For example, when using it via FFI in PHP, it’s >10X faster than PHP’s native crc32 implementation.

Usage

PHP example

$hasher = $ffi->hasher_new();
$ffi->hasher_write($hasher, 'hello world!', 12);
$checksum = $ffi->hasher_finalize($hasher); // 0x03b4c26d

Structs

HasherHandle

Opaque type for C for use in FFI

Functions

crc32_hash

Helper method to just calculate a CRC32 checksum directly for a string

hasher_finalize^⚠

Calculates the CRC32 checksum for data that’s been written to the Hasher

hasher_new

Creates a new Hasher to compute CRC32 checksums

hasher_write^⚠

Writes data to the Hasher