1((function acos 2 (signature float 3 (parameters 4 (declare (in) float x)) 5 ((return (expression float - (constant float (1.5707963)) 6 (call asin ((var_ref x))))))) 7 (signature vec2 8 (parameters 9 (declare (in) vec2 x)) 10 ((return (expression vec2 - (constant float (1.5707963)) 11 (call asin ((var_ref x))))))) 12 (signature vec3 13 (parameters 14 (declare (in) vec3 x)) 15 ((return (expression vec3 - (constant float (1.5707963)) 16 (call asin ((var_ref x))))))) 17 (signature vec4 18 (parameters 19 (declare (in) vec4 x)) 20 ((return (expression vec4 - (constant float (1.5707963)) 21 (call asin ((var_ref x))))))) 22)) 23