1((function isnan 2 (signature bool 3 (parameters 4 (declare (in) float x)) 5 ((return (expression bool != (var_ref x) (var_ref x))))) 6 (signature bvec2 7 (parameters 8 (declare (in) vec2 x)) 9 ((return (expression bvec2 != (var_ref x) (var_ref x))))) 10 (signature bvec3 11 (parameters 12 (declare (in) vec3 x)) 13 ((return (expression bvec3 != (var_ref x) (var_ref x))))) 14 (signature bvec4 15 (parameters 16 (declare (in) vec4 x)) 17 ((return (expression bvec4 != (var_ref x) (var_ref x))))))) 18