A fast and simple in-place implementation of the luhn check algorithm in Rust. Implementations in other languages can be found at github.com/luhnmod10.
Add the crate to your Cargo.toml:
[dependencies]
luhnmod10 = "1.0.0"
Then:
extern crate luhnmod10;
luhnmod10::valid(number);Contributions are welcome! If you can improve the execution time of this implementation without increasing its complexity, please open a pull request. To test your change, run make in the repository to run the tests and the benchmarks.