[(math/round (* 1000000000000.0 (math/atan2 0.0 (- 0.0))))
 (math/round (* 1000000000000.0 (math/atan2 (- 0.0) (- 0.0))))
 (math/copy-sign 1.0 (math/atan2 (- 0.0) 0.0))]