1((function length
2   (signature float
3     (parameters
4       (declare (in) float arg0))
5     ((return (expression float abs (var_ref arg0)))))
6
7   (signature float
8     (parameters
9       (declare (in) vec2 arg0))
10     ((return (expression float sqrt (expression float dot (var_ref arg0) (var_ref arg0))))))
11
12   (signature float
13     (parameters
14       (declare (in) vec3 arg0))
15     ((return (expression float sqrt (expression float dot (var_ref arg0) (var_ref arg0))))))
16
17   (signature float
18     (parameters
19       (declare (in) vec4 arg0))
20     ((return (expression float sqrt (expression float dot (var_ref arg0) (var_ref arg0))))))
21))
22