std::isnan is c++11 only

1 files changed, 1 insertions, 1 deletions

diff --git a/test/packetmath.cpp b/test/packetmath.cpp
index 53fc09a2d..d82b48773 100644
--- a/test/packetmath.cpp
+++ b/test/packetmath.cpp
@@ -318,7 +318,7 @@ template<typename Scalar> void packetmath_real()
     data1[1] = std::numeric_limits<Scalar>::epsilon();
     packet_helper<internal::packet_traits<Scalar>::HasExp,Packet> h;
     h.store(data2, internal::pexp(h.load(data1)));
-    VERIFY(std::isnan(data2[0]));
+    VERIFY(numext::isnan(data2[0]));
     VERIFY_IS_EQUAL(std::exp(std::numeric_limits<Scalar>::epsilon()), data2[1]);
 
     data1[0] = -std::numeric_limits<Scalar>::epsilon();