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