1 var $ = require('../internals/export');
3 // `Math.signbit` method
4 // https://github.com/tc39/proposal-Math.signbit
5 $({ target: 'Math', stat: true }, {
6 signbit: function signbit(x) {
7 return (x = +x) == x && x == 0 ? 1 / x == -Infinity : x < 0;