How to do exponentiation in clojure?

Question

How can I do exponentiation in clojure? For now I\'m only needing integer exponentiation, but the question goes for fractions too.

Answer 1

Use clojure.math.numeric-tower, formerly clojure.contrib.math.

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API Documentation

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(ns user
  (:require [clojure.math.numeric-tower :as m]))

(defn- sqr
  "Uses the numeric tower expt to square a number"
  [x]
  (m/expt x 2))