--- /dev/null
+var $ = require('../internals/export');
+var fails = require('../internals/fails');
+var expm1 = require('../internals/math-expm1');
+
+var abs = Math.abs;
+var exp = Math.exp;
+var E = Math.E;
+
+var FORCED = fails(function () {
+ return Math.sinh(-2e-17) != -2e-17;
+});
+
+// `Math.sinh` method
+// https://tc39.es/ecma262/#sec-math.sinh
+// V8 near Chromium 38 has a problem with very small numbers
+$({ target: 'Math', stat: true, forced: FORCED }, {
+ sinh: function sinh(x) {
+ return abs(x = +x) < 1 ? (expm1(x) - expm1(-x)) / 2 : (exp(x - 1) - exp(-x - 1)) * (E / 2);
+ }
+});