get_x_rotate_quat - Man Page

#include <allegro.h>

void get_x_rotate_quat(QUAT *q, float r);

void get_y_rotate_quat(QUAT *q, float r);

void get_z_rotate_quat(QUAT *q, float r);

Construct axis rotation quaternions, storing them in q. When applied to a  point, these quaternions will rotate it about the relevant axis by the  specified angle (given in binary, 256 degrees to a circle format).

The man pages get_y_rotate_quat(3) and get_z_rotate_quat(3) are aliases of get_x_rotate_quat(3).