---
name: "quat_to_matrix"
section: "3alleg"
platform: "linux"
package: "liballegro-doc"
version: "2:4.2.2-2.2"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/quat_to_matrix"
---

# quat\_to\_matrix(3alleg)

Constructs a rotation matrix from a quaternion. Allegro game programming library.

## NAME

quat\_to\_matrix - Constructs a rotation matrix from a quaternion. Allegro game programming library.

## SYNOPSIS

**#include \<allegro.h\>**

**void quat\_to\_matrix(const QUAT \*q, MATRIX\_f \*m);**

## DESCRIPTION

Constructs a rotation matrix from a quaternion.

## SEE ALSO

[**exquat**(3alleg)](/exquat/3alleg.md)