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# Bit Swap
This exchanges the bit-values in two locations. It is semantically and
behaviorally equivalent to [`BitRef::swap`][0], except that it works on
bit-pointer structures rather than proxy references. Prefer to use a proxy
reference or [`BitSlice::swap`][1] instead.
## Original
[`ptr::swap`](core::ptr::swap)
## Safety
This has the same safety requirements as [`ptr::read`][2] and [`ptr::write`][3],
as it is required to use them in its implementation.
## Examples
```rust
use bitvec::prelude::*;
use bitvec::ptr as bv_ptr;
let mut data = 2u8;
let x = BitPtr::<_, _, Lsb0>::from_mut(&mut data);
let y = unsafe { x.add(1) };
unsafe { bv_ptr::swap(x, y); }
assert_eq!(data, 1);
```
[0]: crate::ptr::BitRef::swap
[1]: crate::slice::BitSlice::swap
[2]: crate::ptr::read
[3]: crate::ptr::write
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