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- 'use strict';
- var $ = require('../internals/export');
- // eslint-disable-next-line es/no-math-atanh -- required for testing
- var $atanh = Math.atanh;
- var log = Math.log;
- var FORCED = !($atanh && 1 / $atanh(-0) < 0);
- // `Math.atanh` method
- // https://tc39.es/ecma262/#sec-math.atanh
- // Tor Browser bug: Math.atanh(-0) -> 0
- $({ target: 'Math', stat: true, forced: FORCED }, {
- atanh: function atanh(x) {
- var n = +x;
- return n === 0 ? n : log((1 + n) / (1 - n)) / 2;
- }
- });
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