itoa
====
[
](https://github.com/dtolnay/itoa)
[
](https://crates.io/crates/itoa)
[
](https://docs.rs/itoa)
[
](https://github.com/dtolnay/itoa/actions?query=branch%3Amaster)
This crate provides fast functions for printing integer primitives to an
[`io::Write`] or a [`fmt::Write`]. The implementation comes straight from
[libcore] but avoids the performance penalty of going through
[`fmt::Formatter`].
See also [`dtoa`] for printing floating point primitives.
*Version requirement: rustc 1.36+*
[`io::Write`]: https://doc.rust-lang.org/std/io/trait.Write.html
[`fmt::Write`]: https://doc.rust-lang.org/core/fmt/trait.Write.html
[libcore]: https://github.com/rust-lang/rust/blob/b8214dc6c6fc20d0a660fb5700dca9ebf51ebe89/src/libcore/fmt/num.rs#L201-L254
[`fmt::Formatter`]: https://doc.rust-lang.org/std/fmt/struct.Formatter.html
[`dtoa`]: https://github.com/dtolnay/dtoa
```toml
[dependencies]
itoa = "0.4"
```
## Performance (lower is better)
## Example
```rust
fn main() {
let mut buffer = itoa::Buffer::new();
let printed = buffer.format(128u64);
assert_eq!(printed, "128");
}
```
#### License
Licensed under either of Apache License, Version
2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
be dual licensed as above, without any additional terms or conditions.