expm1 (clj)

function

(expm1 x)

Returns e^x - 1. Near 0, expm1(x)+1 is more accurate to e^x than exp(x). If x is ##NaN => ##NaN If x is ##Inf => #Inf If x is ##-Inf => -1.0 If x is zero => x See: https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#expm1-double-

Examples

clojure

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

(deftest test-expm1
  (is (NaN? (m/expm1 ##NaN)))
  (is (= ##Inf (m/expm1 ##Inf)))
  (is (= -1.0 (m/expm1 ##-Inf)))
  (is (= 0.0 (m/expm1 0.0))))