crc

Rust implementation of CRC(32, 64)

• Crate
• Usage
• Benchmark
• TODO
• License

##Usage Add crc to Cargo.toml

[dependencies]
crc = "0.2.0"

or

[dependencies.crc]
git = "https://github.com/mrhooray/crc-rs"

Add this to crate root

extern crate crc;

Compute CRC32

use crc::crc32;

println!("{:x}", crc32::checksum_castagnoli(&b"123456789")); // -> 0xe3069283
println!("{:x}", crc32::checksum_ieee(&b"123456789")); // -> 0xcbf43926
println!("{:x}", crc32::checksum_koopman(&b"123456789")); // -> 0x2d3dd0ae

// use provided or custom polynomial
let mut digest = crc32::Digest::new(crc32::IEEE);
digest.write(&b"123456789");
println!("{:x}", digest.sum32()); // -> 0xcbf43926

Compute CRC64

use crc::crc64;

println!("{:x}", crc64::checksum_ecma(&b"123456789")); // -> 0x995dc9bbdf1939fa
println!("{:x}", crc64::checksum_iso(&b"123456789")); // -> 0xb90956c775a41001

// use provided or custom polynomial
let mut digest = crc64::Digest::new(crc64::ECMA);
digest.write(&b"123456789");
println!("{:x}", digest.sum64()); // -> 0x995dc9bbdf1939fa

##Benchmark cargo bench with 2.3 GHz Intel Core i7 results ~400MB/s throughput. Comparison

running 14 tests
test crc32::tests::test_checksum_castagnoli ... ignored
test crc32::tests::test_checksum_ieee ... ignored
test crc32::tests::test_checksum_koopman ... ignored
test crc32::tests::test_digest_castagnoli ... ignored
test crc32::tests::test_digest_ieee ... ignored
test crc32::tests::test_digest_koopman ... ignored
test crc64::tests::test_checksum_ecma ... ignored
test crc64::tests::test_checksum_iso ... ignored
test crc64::tests::test_digest_ecma ... ignored
test crc64::tests::test_digest_iso ... ignored
test crc32::tests::bench_make_table       ... bench:       447 ns/iter (+/- 81)
test crc32::tests::bench_update_megabytes ... bench:   2479741 ns/iter (+/- 183031)
test crc64::tests::bench_make_table       ... bench:      1166 ns/iter (+/- 93)
test crc64::tests::bench_update_megabytes ... bench:   2478464 ns/iter (+/- 68731)

test result: ok. 0 passed; 0 failed; 10 ignored; 4 measured

##TODO

• rustdoc
• Slicing-by-4/8/16 Implementation

##License MIT