1 var $ = require('../internals/export');
3 var nativeAtanh = Math.atanh;
7 // https://tc39.es/ecma262/#sec-math.atanh
8 // Tor Browser bug: Math.atanh(-0) -> 0
9 $({ target: 'Math', stat: true, forced: !(nativeAtanh && 1 / nativeAtanh(-0) < 0) }, {
10 atanh: function atanh(x) {
11 return (x = +x) == 0 ? x : log((1 + x) / (1 - x)) / 2;