1((function not
2   (signature bvec2
3     (parameters
4       (declare (in) bvec2 arg0))
5     ((return (expression bvec2 ! (var_ref arg0)))))
6
7   (signature bvec3
8     (parameters
9       (declare (in) bvec3 arg0))
10     ((return (expression bvec3 ! (var_ref arg0)))))
11
12   (signature bvec4
13     (parameters
14       (declare (in) bvec4 arg0))
15     ((return (expression bvec4 ! (var_ref arg0)))))
16))
17