From 8314962ce2ce5e7cd8c591b7a0a7039abd83f5c6 Mon Sep 17 00:00:00 2001
From: Benoit Steiner <benoit.steiner.goog@gmail.com>
Date: Thu, 10 Dec 2015 13:13:45 -0800
Subject: [PATCH] Only test the lgamma, erf and erfc function when using a C99
 compliant compiler

---
 test/array.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/array.cpp b/test/array.cpp
index 9994c23c3..6adedfb06 100644
--- a/test/array.cpp
+++ b/test/array.cpp
@@ -202,7 +202,7 @@ template<typename ArrayType> void array_real(const ArrayType& m)
             m2 = ArrayType::Random(rows, cols),
             m3(rows, cols),
             m4 = m1;
-  
+
   m4 = (m4.abs()==Scalar(0)).select(1,m4);
 
   Scalar  s1 = internal::random<Scalar>();
@@ -217,9 +217,11 @@ template<typename ArrayType> void array_real(const ArrayType& m)
   VERIFY_IS_APPROX(m1.sinh(), sinh(m1));
   VERIFY_IS_APPROX(m1.cosh(), cosh(m1));
   VERIFY_IS_APPROX(m1.tanh(), tanh(m1));
+#ifdef EIGEN_HAS_C99_MATH
   VERIFY_IS_APPROX(m1.lgamma(), lgamma(m1));
   VERIFY_IS_APPROX(m1.erf(), erf(m1));
   VERIFY_IS_APPROX(m1.erfc(), erfc(m1));
+#endif  // EIGEN_HAS_C99_MATH
   VERIFY_IS_APPROX(m1.arg(), arg(m1));
   VERIFY_IS_APPROX(m1.round(), round(m1));
   VERIFY_IS_APPROX(m1.floor(), floor(m1));