1((function tan
2   (signature float
3     (parameters
4       (declare (in) float angle))
5     ((return (expression float / (expression float sin (var_ref angle)) (expression float cos (var_ref angle))))))
6
7   (signature vec2
8     (parameters
9       (declare (in) vec2 angle))
10     ((return (expression vec2 / (expression vec2 sin (var_ref angle)) (expression vec2 cos (var_ref angle))))))
11
12   (signature vec3
13     (parameters
14       (declare (in) vec3 angle))
15     ((return (expression vec3 / (expression vec3 sin (var_ref angle)) (expression vec3 cos (var_ref angle))))))
16
17   (signature vec4
18     (parameters
19       (declare (in) vec4 angle))
20     ((return (expression vec4 / (expression vec4 sin (var_ref angle)) (expression vec4 cos (var_ref angle))))))
21))
22