Sean Buttinger antfarm
antfarm
/ CRC32.swift
Last active
March 29, 2023 10:52
CRC32 checksum generation in a few lines of Swift 5. https://en.wikipedia.org/wiki/Cyclic_redundancy_check#CRC-32_algorithm
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| class CRC32 { | |
| static var table: [UInt32] = { | |
| (0...255).map { i -> UInt32 in | |
| (0..<8).reduce(UInt32(i), { c, _ in | |
| (c % 2 == 0) ? (c >> 1) : (0xEDB88320 ^ (c >> 1)) | |
| }) | |
| } | |
| }() |