Bug: 135632517

Clone this repo:
  1. 7e15694 Update TEST_MAPPING by Jeff Vander Stoep · 6 days ago master
  2. ba9a5bb Update TEST_MAPPING by David Brazdil · 13 days ago
  3. 622b61e Add no-std version of byteorder library. by Andrew Walbran · 4 weeks ago main-16k-with-phones
  4. 4b30420 Merge "Update TEST_MAPPING" am: ec43e1fbfc am: 86b7dc4d1a am: eee4584b96 am: 52328412ba by Treehugger Robot · 8 months ago
  5. 5232841 Merge "Update TEST_MAPPING" am: ec43e1fbfc am: 86b7dc4d1a am: eee4584b96 by Treehugger Robot · 8 months ago


This crate provides convenience methods for encoding and decoding numbers in either big-endian or little-endian order.

Build status

Dual-licensed under MIT or the UNLICENSE.




This crate works with Cargo and is on crates.io. Add it to your Cargo.toml like so:

byteorder = "1"

If you want to augment existing Read and Write traits, then import the extension methods like so:

use byteorder::{ReadBytesExt, WriteBytesExt, BigEndian, LittleEndian};

For example:

use std::io::Cursor;
use byteorder::{BigEndian, ReadBytesExt};

let mut rdr = Cursor::new(vec![2, 5, 3, 0]);
// Note that we use type parameters to indicate which kind of byte order
// we want!
assert_eq!(517, rdr.read_u16::<BigEndian>().unwrap());
assert_eq!(768, rdr.read_u16::<BigEndian>().unwrap());

no_std crates

This crate has a feature, std, that is enabled by default. To use this crate in a no_std context, add the following to your Cargo.toml:

byteorder = { version = "1", default-features = false }


Note that as of Rust 1.32, the standard numeric types provide built-in methods like to_le_bytes and from_le_bytes, which support some of the same use cases.