funcunit/site/node_modules/core-js/modules/es6.math.atanh.js

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// 20.2.2.7 Math.atanh(x)
var $export = require('./$.export');

$export($export.S, 'Math', {
  atanh: function atanh(x){
    return (x = +x) == 0 ? x : Math.log((1 + x) / (1 - x)) / 2;
  }
});