copy-sign (clj)

function

(copy-sign magnitude sign)

Returns a double with the magnitude of the first argument and the sign of the second. See: https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#copySign-double-double-

Examples

clojure

(ns clojure.test-clojure.math
  (:require
    [clojure.test :refer :all]
    [clojure.math :as m]))

(deftest test-copy-sign
  (is (= 1.0 (m/copy-sign 1.0 42.0)))
  (is (= -1.0 (m/copy-sign 1.0 -42.0)))
  (is (= -1.0 (m/copy-sign 1.0 ##-Inf))))