"use strict";

module.exports = function atan(arg) {
  //  discuss at: http://locutus.io/php/atan/
  // original by: Onno Marsman (https://twitter.com/onnomarsman)
  //   example 1: atan(8723321.4)
  //   returns 1: 1.5707962121596615

  return Math.atan(arg);
};
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