1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Math/tanh/tanh-specialVals.js b/js/src/tests/test262/built-ins/Math/tanh/tanh-specialVals.js
new file mode 100644
index 0000000000..3145214035
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Math/tanh/tanh-specialVals.js
@@ -0,0 +1,20 @@
+// Copyright 2015 Microsoft Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+description: Math.tanh with special values
+es6id: 20.2.2.34
+---*/
+
+assert.sameValue(Math.tanh(NaN), Number.NaN,
+  "Math.tanh produces incorrect output for NaN");
+assert.sameValue(Math.tanh(Number.NEGATIVE_INFINITY), -1,
+  "Math.tanh should produce -1 for Number.NEGATIVE_INFINITY");
+assert.sameValue(Math.tanh(Number.POSITIVE_INFINITY), 1,
+  "Math.tanh should produce 1 for Number.POSITIVE_INFINITY");
+assert.sameValue(1 / Math.tanh(-0), Number.NEGATIVE_INFINITY,
+  "Math.tanh should produce -0 for -0");
+assert.sameValue(1 / Math.tanh(0), Number.POSITIVE_INFINITY,
+  "Math.tanh should produce +0 for +0");
+
+reportCompare(0, 0);