| var $ = require('../internals/export'); | |
| var nativeAtanh = Math.atanh; | |
| var log = Math.log; | |
| // `Math.atanh` method | |
| // https://tc39.github.io/ecma262/#sec-math.atanh | |
| // Tor Browser bug: Math.atanh(-0) -> 0 | |
| $({ target: 'Math', stat: true, forced: !(nativeAtanh && 1 / nativeAtanh(-0) < 0) }, { | |
| atanh: function atanh(x) { | |
| return (x = +x) == 0 ? x : log((1 + x) / (1 - x)) / 2; | |
| } | |
| }); |