# shz_mat4x4_swap_cols

Source: https://sh4zam.com/api/matrix/shz_mat4x4_swap_cols/

> Swaps the 4D column vectors located at col1 and col2 within mat

```c
SHZ_INLINE void shz_mat4x4_swap_cols(shz_mat4x4_t* mat, size_t col1, size_t col2) SHZ_NOEXCEPT;
```

Swaps the 4D column vectors located at `col1` and `col2` within `mat`.

## Parameters

| Name | Type | Description |
| --- | --- | --- |
| `mat` | `shz_mat4x4_t *` |  |
| `col1` | `size_t` |  |
| `col2` | `size_t` |  |

## Returns

Nothing (`void`).

## Naming and requirements

- `shz_mat4x4_t` and `shz_mat2x2_t` arguments must be 8-byte aligned. Unaligned data goes through the `float[16]` parameters of the `_unaligned` routines.

## Availability

- **C++ equivalent:** [`shz::mat4x4::swap_cols`](https://sh4zam.com/api/cpp/mat4x4/#swap_cols)
- **Type-generic form:** none
- **Back-ends:** SH4: shared C implementation · SW: portable C · SPU: shared C implementation
- **Defined in:** [`sh4zam/shz_matrix.h:358`](https://github.com/gyrovorbis/sh4zam/blob/ba1e30c88d49df0311870b229e1dd860ef26c477/include/sh4zam/shz_matrix.h#L358)
- **Module:** [Matrix](https://sh4zam.com/api/matrix/), section "Setting"