# shz_mat4x4_get_scale

Source: https://sh4zam.com/api/matrix/shz_mat4x4_get_scale/

```c
SHZ_INLINE shz_vec3_t shz_mat4x4_get_scale(const shz_mat4x4_t* mat) SHZ_NOEXCEPT;
```

Exracts the 3D scale factors from the given 4x4 matrix.

## Parameters

| Name | Type | Description |
| --- | --- | --- |
| `mat` | `const shz_mat4x4_t *` |  |

## Returns

`shz_vec3_t`

## Warnings

- This routine assumes `mat` is a standard TRS-style transform matrix, without shearing or reflection.

## 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::get_scale`](https://sh4zam.com/api/cpp/mat4x4/#get_scale)
- **Type-generic form:** none
- **Back-ends:** SH4: dedicated SH4 implementation · SW: portable C · SPU: shared C implementation
- **Defined in:** [`sh4zam/shz_matrix.h:321`](https://github.com/gyrovorbis/sh4zam/blob/ba1e30c88d49df0311870b229e1dd860ef26c477/include/sh4zam/shz_matrix.h#L321)
- **Module:** [Matrix](https://sh4zam.com/api/matrix/), section "Getting"