"use strict";

module.exports = function asinh(arg) {
  //  discuss at: https://locutus.io/php/asinh/
  // original by: Onno Marsman (https://twitter.com/onnomarsman)
  //   example 1: asinh(8723321.4)
  //   returns 1: 16.67465779841863

  return Math.log(arg + Math.sqrt(arg * arg + 1));
};
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