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+itoa
+====
+
+[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/itoa-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/itoa)
+[<img alt="crates.io" src="https://img.shields.io/crates/v/itoa.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/itoa)
+[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-itoa-66c2a5?style=for-the-badge&labelColor=555555&logoColor=white&logo=data:image/svg+xml;base64,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" height="20">](https://docs.rs/itoa)
+[<img alt="build status" src="https://img.shields.io/github/workflow/status/dtolnay/itoa/CI/master?style=for-the-badge" height="20">](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 1.0+*
+
+[`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"
+```
+
+<br>
+
+## Performance (lower is better)
+
+![performance](https://raw.githubusercontent.com/dtolnay/itoa/master/performance.png)
+
+<br>
+
+## Examples
+
+```rust
+use std::{fmt, io};
+
+fn demo_itoa_write() -> io::Result<()> {
+    // Write to a vector or other io::Write.
+    let mut buf = Vec::new();
+    itoa::write(&mut buf, 128u64)?;
+    println!("{:?}", buf);
+
+    // Write to a stack buffer.
+    let mut bytes = [0u8; 20];
+    let n = itoa::write(&mut bytes[..], 128u64)?;
+    println!("{:?}", &bytes[..n]);
+
+    Ok(())
+}
+
+fn demo_itoa_fmt() -> fmt::Result {
+    // Write to a string.
+    let mut s = String::new();
+    itoa::fmt(&mut s, 128u64)?;
+    println!("{}", s);
+
+    Ok(())
+}
+```
+
+The function signatures are:
+
+```rust
+fn write<W: io::Write, V: itoa::Integer>(writer: W, value: V) -> io::Result<usize>;
+
+fn fmt<W: fmt::Write, V: itoa::Integer>(writer: W, value: V) -> fmt::Result;
+```
+
+where `itoa::Integer` is implemented for i8, u8, i16, u16, i32, u32, i64, u64,
+i128, u128, isize and usize. 128-bit integer support requires rustc 1.26+ and
+the `i128` feature of this crate enabled.
+
+The `write` function is only available when the `std` feature is enabled
+(default is enabled). The return value gives the number of bytes written.
+
+<br>
+
+#### License
+
+<sup>
+Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
+2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
+</sup>
+
+<br>
+
+<sub>
+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.
+</sub>