x86_64)

# Examples

```
use portable_atomic::{AtomicU16, Ordering};

let foo = AtomicU16::new(5);
foo.neg(Ordering::Relaxed);
assert_eq!(foo.load(Ordering::Relaxed), 5_u16.wrapping_neg());
foo.neg(Ordering::Relaxed);
assert_eq!(foo.load(Ordering::Relaxed), 5);
```