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) { var n = +x; return n == 0 ? n : log((1 + n) / (1 - n)) / 2; } });