commit | 622b61e52b895c88eb5dc1cc55fad885ac6072f6 | [log] [tgz] |
---|---|---|
author | Andrew Walbran <qwandor@google.com> | Fri Jan 06 17:13:26 2023 +0000 |
committer | Andrew Walbran <qwandor@google.com> | Fri Jan 06 17:13:26 2023 +0000 |
tree | edde13a0369c03135b816b6f9244127eae07da0e | |
parent | 4b3042026b42e6069d97fc4e73ae05ee823a00b9 [diff] |
Add no-std version of byteorder library. This is needed for pVM firmware, via virtio-drivers and zerocopy. Bug: 237249743 Test: m vmbase_example_bin pvmfw_bin Change-Id: I1a7bf375a3b75913b8b75ca4ac2cd69c3cb13bc5
This crate provides convenience methods for encoding and decoding numbers in either big-endian or little-endian order.
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:
[dependencies] 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
cratesThis 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
:
[dependencies] 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.