1((function log2 2 (signature float 3 (parameters 4 (declare (in) float arg0)) 5 ((return (expression float log2 (var_ref arg0))))) 6 7 (signature vec2 8 (parameters 9 (declare (in) vec2 arg0)) 10 ((return (expression vec2 log2 (var_ref arg0))))) 11 12 (signature vec3 13 (parameters 14 (declare (in) vec3 arg0)) 15 ((return (expression vec3 log2 (var_ref arg0))))) 16 17 (signature vec4 18 (parameters 19 (declare (in) vec4 arg0)) 20 ((return (expression vec4 log2 (var_ref arg0))))) 21)) 22