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