diff --git a/Eigen/src/Core/GlobalFunctions.h b/Eigen/src/Core/GlobalFunctions.h
index 90d6b6e28..aaa076701 100644
--- a/Eigen/src/Core/GlobalFunctions.h
+++ b/Eigen/src/Core/GlobalFunctions.h
@@ -14,7 +14,7 @@
 #define EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(NAME,FUNCTOR) \
   template<typename Derived> \
   inline const Eigen::CwiseUnaryOp<Eigen::internal::FUNCTOR<typename Derived::Scalar>, const Derived> \
-  NAME(const Eigen::ArrayBase<Derived>& x) { \
+  (NAME)(const Eigen::ArrayBase<Derived>& x) { \
     return Eigen::CwiseUnaryOp<Eigen::internal::FUNCTOR<typename Derived::Scalar>, const Derived>(x.derived()); \
   }
 
diff --git a/Eigen/src/Core/MathFunctions.h b/Eigen/src/Core/MathFunctions.h
index f2d5b4879..6aa062198 100644
--- a/Eigen/src/Core/MathFunctions.h
+++ b/Eigen/src/Core/MathFunctions.h
@@ -788,7 +788,7 @@ bool (isfinite)(const T& x)
 {
   #if EIGEN_HAS_CXX11_MATH
     using std::isfinite;
-    return isfinite(x);
+    return isfinite EIGEN_NOT_A_MACRO (x);
   #else
     return x<NumTraits<T>::highest() && x>NumTraits<T>::lowest();
   #endif
@@ -800,7 +800,7 @@ bool (isnan)(const T& x)
 {
   #if EIGEN_HAS_CXX11_MATH
     using std::isnan;
-    return isnan(x);
+    return isnan EIGEN_NOT_A_MACRO (x);
   #else
     return x != x;
   #endif
@@ -812,7 +812,7 @@ bool (isinf)(const T& x)
 {
   #if EIGEN_HAS_CXX11_MATH
     using std::isinf;
-    return isinf(x);
+    return isinf EIGEN_NOT_A_MACRO (x);
   #else
     return x>NumTraits<T>::highest() || x<NumTraits<T>::lowest();
   #endif
@@ -821,19 +821,19 @@ bool (isinf)(const T& x)
 template<typename T>
 bool (isfinite)(const std::complex<T>& x)
 {
-  return numext::isfinite(numext::real(x)) && numext::isfinite(numext::imag(x));
+  return (numext::isfinite)(numext::real(x)) && (numext::isfinite)(numext::imag(x));
 }
 
 template<typename T>
 bool (isnan)(const std::complex<T>& x)
 {
-  return numext::isnan(numext::real(x)) || numext::isnan(numext::imag(x));
+  return (numext::isnan)(numext::real(x)) || (numext::isnan)(numext::imag(x));
 }
 
 template<typename T>
 bool (isinf)(const std::complex<T>& x)
 {
-  return (numext::isinf(numext::real(x)) || numext::isinf(numext::imag(x))) && (!numext::isnan(x));
+  return ((numext::isinf)(numext::real(x)) || (numext::isinf)(numext::imag(x))) && (!(numext::isnan)(x));
 }
 
 template<typename Scalar>
diff --git a/Eigen/src/Core/functors/UnaryFunctors.h b/Eigen/src/Core/functors/UnaryFunctors.h
index 9b4f49c3c..260e8f834 100644
--- a/Eigen/src/Core/functors/UnaryFunctors.h
+++ b/Eigen/src/Core/functors/UnaryFunctors.h
@@ -591,7 +591,7 @@ struct functor_traits<scalar_ceil_op<Scalar> >
 template<typename Scalar> struct scalar_isnan_op {
   EIGEN_EMPTY_STRUCT_CTOR(scalar_isnan_op)
   typedef bool result_type;
-  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE result_type operator() (const Scalar& a) const { return numext::isnan(a); }
+  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE result_type operator() (const Scalar& a) const { return (numext::isnan)(a); }
 };
 template<typename Scalar>
 struct functor_traits<scalar_isnan_op<Scalar> >
@@ -609,7 +609,7 @@ struct functor_traits<scalar_isnan_op<Scalar> >
 template<typename Scalar> struct scalar_isinf_op {
   EIGEN_EMPTY_STRUCT_CTOR(scalar_isinf_op)
   typedef bool result_type;
-  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE result_type operator() (const Scalar& a) const { return numext::isinf(a); }
+  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE result_type operator() (const Scalar& a) const { return (numext::isinf)(a); }
 };
 template<typename Scalar>
 struct functor_traits<scalar_isinf_op<Scalar> >
@@ -627,7 +627,7 @@ struct functor_traits<scalar_isinf_op<Scalar> >
 template<typename Scalar> struct scalar_isfinite_op {
   EIGEN_EMPTY_STRUCT_CTOR(scalar_isfinite_op)
   typedef bool result_type;
-  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE result_type operator() (const Scalar& a) const { return numext::isfinite(a); }
+  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE result_type operator() (const Scalar& a) const { return (numext::isfinite)(a); }
 };
 template<typename Scalar>
 struct functor_traits<scalar_isfinite_op<Scalar> >
diff --git a/test/array.cpp b/test/array.cpp
index 3d00d1d2d..9f61c4b26 100644
--- a/test/array.cpp
+++ b/test/array.cpp
@@ -221,9 +221,9 @@ template<typename ArrayType> void array_real(const ArrayType& m)
   VERIFY_IS_APPROX(m1.round(), round(m1));
   VERIFY_IS_APPROX(m1.floor(), floor(m1));
   VERIFY_IS_APPROX(m1.ceil(), ceil(m1));
-  VERIFY((m1.isNaN() == Eigen::isnan(m1)).all());
-  VERIFY((m1.isInf() == Eigen::isinf(m1)).all());
-  VERIFY((m1.isFinite() == Eigen::isfinite(m1)).all());
+  VERIFY((m1.isNaN() == (Eigen::isnan)(m1)).all());
+  VERIFY((m1.isInf() == (Eigen::isinf)(m1)).all());
+  VERIFY((m1.isFinite() == (Eigen::isfinite)(m1)).all());
   VERIFY_IS_APPROX(m1.inverse(), inverse(m1));
   VERIFY_IS_APPROX(m1.abs(), abs(m1));
   VERIFY_IS_APPROX(m1.abs2(), abs2(m1));
@@ -249,9 +249,9 @@ template<typename ArrayType> void array_real(const ArrayType& m)
   VERIFY_IS_APPROX(tanh(m1), (0.5*(exp(m1)-exp(-m1)))/(0.5*(exp(m1)+exp(-m1))));
   VERIFY_IS_APPROX(arg(m1), ((ArrayType)(m1<0))*std::acos(-1.0));
   VERIFY((round(m1) <= ceil(m1) && round(m1) >= floor(m1)).all());
-  VERIFY(Eigen::isnan((m1*0.0)/0.0).all());
-  VERIFY(Eigen::isinf(m4/0.0).all());
-  VERIFY((Eigen::isfinite(m1) && (!Eigen::isfinite(m1*0.0/0.0)) && (!Eigen::isfinite(m4/0.0))).all());
+  VERIFY((Eigen::isnan)((m1*0.0)/0.0).all());
+  VERIFY((Eigen::isinf)(m4/0.0).all());
+  VERIFY(((Eigen::isfinite)(m1) && (!(Eigen::isfinite)(m1*0.0/0.0)) && (!(Eigen::isfinite)(m4/0.0))).all());
   VERIFY_IS_APPROX(inverse(inverse(m1)),m1);
   VERIFY((abs(m1) == m1 || abs(m1) == -m1).all());
   VERIFY_IS_APPROX(m3, sqrt(abs2(m1)));
@@ -336,9 +336,9 @@ template<typename ArrayType> void array_complex(const ArrayType& m)
   VERIFY_IS_APPROX(m1.cosh(), cosh(m1));
   VERIFY_IS_APPROX(m1.tanh(), tanh(m1));
   VERIFY_IS_APPROX(m1.arg(), arg(m1));
-  VERIFY((m1.isNaN() == Eigen::isnan(m1)).all());
-  VERIFY((m1.isInf() == Eigen::isinf(m1)).all());
-  VERIFY((m1.isFinite() == Eigen::isfinite(m1)).all());
+  VERIFY((m1.isNaN() == (Eigen::isnan)(m1)).all());
+  VERIFY((m1.isInf() == (Eigen::isinf)(m1)).all());
+  VERIFY((m1.isFinite() == (Eigen::isfinite)(m1)).all());
   VERIFY_IS_APPROX(m1.inverse(), inverse(m1));
   VERIFY_IS_APPROX(m1.log(), log(m1));
   VERIFY_IS_APPROX(m1.log10(), log10(m1));
@@ -364,20 +364,20 @@ template<typename ArrayType> void array_complex(const ArrayType& m)
   VERIFY_IS_APPROX(arg(m1), m3);
 
   std::complex<RealScalar> zero(0.0,0.0);
-  VERIFY(Eigen::isnan(m1*zero/zero).all());
+  VERIFY((Eigen::isnan)(m1*zero/zero).all());
 #if EIGEN_COMP_CLANG
   // clang's complex division is notoriously broken
-  if(numext::isinf(m4(0,0)/RealScalar(0))) {
+  if((numext::isinf)(m4(0,0)/RealScalar(0))) {
 #endif
-  VERIFY(Eigen::isinf(m4/zero).all());
+  VERIFY((Eigen::isinf)(m4/zero).all());
 #if EIGEN_COMP_CLANG
   }
   else
   {
-    VERIFY(Eigen::isinf(m4.real()/zero.real()).all());
+    VERIFY((Eigen::isinf)(m4.real()/zero.real()).all());
   }
 #endif
-  VERIFY((Eigen::isfinite(m1) && (!Eigen::isfinite(m1*zero/zero)) && (!Eigen::isfinite(m1/zero))).all());
+  VERIFY(((Eigen::isfinite)(m1) && (!(Eigen::isfinite)(m1*zero/zero)) && (!(Eigen::isfinite)(m1/zero))).all());
 
   VERIFY_IS_APPROX(inverse(inverse(m1)),m1);
   VERIFY_IS_APPROX(conj(m1.conjugate()), m1);
diff --git a/test/main.h b/test/main.h
index 0d03d4853..2797e8623 100644
--- a/test/main.h
+++ b/test/main.h
@@ -55,6 +55,9 @@
 // compiler error.
 #define min(A,B) please_protect_your_min_with_parentheses
 #define max(A,B) please_protect_your_max_with_parentheses
+#define isnan(X) please_protect_your_isnan_with_parentheses
+#define isinf(X) please_protect_your_isinf_with_parentheses
+#define isfinite(X) please_protect_your_isfinite_with_parentheses
 
 #define FORBIDDEN_IDENTIFIER (this_identifier_is_forbidden_to_avoid_clashes) this_identifier_is_forbidden_to_avoid_clashes
 // B0 is defined in POSIX header termios.h