From bf185c3c28073c5fd2c2e88cfcd2438bf1074677 Mon Sep 17 00:00:00 2001
From: Benoit Steiner <benoit.steiner.goog@gmail.com>
Date: Tue, 10 May 2016 16:21:43 -0700
Subject: [PATCH] Extended the tests for ptanh

---
 test/packetmath.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/test/packetmath.cpp b/test/packetmath.cpp
index 7f5a6512d..0d96d614e 100644
--- a/test/packetmath.cpp
+++ b/test/packetmath.cpp
@@ -360,6 +360,13 @@ template<typename Scalar> void packetmath_real()
     VERIFY_IS_EQUAL(std::exp(-std::numeric_limits<Scalar>::denorm_min()), data2[1]);
   }
 
+  if (PacketTraits::HasTanh) {
+    data1[0] = std::numeric_limits<Scalar>::quiet_NaN();
+    packet_helper<internal::packet_traits<Scalar>::HasTanh,Packet> h;
+    h.store(data2, internal::ptanh(h.load(data1)));
+    VERIFY((numext::isnan)(data2[0]));
+  }
+
 #ifdef EIGEN_HAS_C99_MATH
   {
     data1[0] = std::numeric_limits<Scalar>::quiet_NaN();