l ordering modes are possible. Note that using
[`Acquire`] makes the store part of this operation [`Relaxed`], and
using [`Release`] makes the load part [`Relaxed`].

# Examples

```
use portable_atomic::{AtomicIsize, Ordering};

let foo = AtomicIsize::new(0);
assert_eq!(foo.fetch_not(Ordering::Relaxed), 0);
assert_eq!(foo.load(Ordering::Relaxed), !0);
```