diff --git a/Eigen/src/Core/IO.h b/Eigen/src/Core/IO.h
index ffb214894..22db103ed 100644
--- a/Eigen/src/Core/IO.h
+++ b/Eigen/src/Core/IO.h
@@ -132,7 +132,7 @@ struct ei_significant_decimals_impl
   typedef typename NumTraits<Scalar>::Real RealScalar;
   static inline int run()
   {
-    return (int) std::ceil(-ei_log(NumTraits<RealScalar>::epsilon())/ei_log(RealScalar(10)));
+    return ei_cast_to_int(std::ceil(-ei_log(NumTraits<RealScalar>::epsilon())/ei_log(RealScalar(10))));
   }
 };
 
diff --git a/Eigen/src/Core/MathFunctions.h b/Eigen/src/Core/MathFunctions.h
index c97a68e50..943b44cfa 100644
--- a/Eigen/src/Core/MathFunctions.h
+++ b/Eigen/src/Core/MathFunctions.h
@@ -44,6 +44,20 @@ template<typename T> inline typename NumTraits<T>::Real ei_hypot(T x, T y)
   return p * ei_sqrt(T(1) + qp*qp);
 }
 
+template<typename T> struct ei_cast_to_int_impl
+{
+  static int run(const T& x)
+  {
+    return int(x);
+  }
+};
+
+template<typename T> inline int ei_cast_to_int(const T& x)
+{
+  return ei_cast_to_int_impl<T>::run(x);
+}
+
+
 /**************
 ***   int   ***
 **************/