14 lines
388 B
JavaScript
14 lines
388 B
JavaScript
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;
|
|
}
|
|
});
|