atomic_bitfield

Atomic Bitfield

Provides a bitfield abstraction for the core atomic types. This crate is no_std compatible by default, and does not itself use any unsafe code.

Note: On stable this crate assumes the presence of the following atomics which may cause compilation to fail on certain platforms. * Atomic{U,I}32 and smaller * Atomic{U,I}size * Atomic{U,I}64 on 64 bit platforms

The nightly feature of this crate enables target_has_atomic and uses that instead to detect which atomic types are available.

Usage Example

```rust use core::sync::atomic::{AtomicU8, Ordering::Relaxed}; use atomic_bitfield::AtomicBitField as _;

let flags = AtomicU8::new(0b1000);

let prevstate = flags.setbit(0, Relaxed); asserteq!(prevstate, false); assert_eq!(flags.load(Relaxed), 0b1001);

let prevstate = flags.togglebit(3, Relaxed); asserteq!(prevstate, true); assert_eq!(flags.load(Relaxed), 0b0001);

let prevstate = flags.swapbit(0, false, Relaxed); asserteq!(prevstate, true); assert_eq!(flags.load(Relaxed), 0b0000); ```

License: MIT