diff --git a/include/cppad/cg/base_double.hpp b/include/cppad/cg/base_double.hpp
index 38829192..66549d5c 100644
--- a/include/cppad/cg/base_double.hpp
+++ b/include/cppad/cg/base_double.hpp
@@ -20,29 +20,7 @@ namespace CppAD {
 /**
  * Specialization of the numeric_limits for doubles
  */
-template <>
-class numeric_limits<cg::CG<double> > {
-public:
-
-    static cg::CG<double> epsilon() {
-        return std::numeric_limits<double>::epsilon();
-    }
-
-    static cg::CG<double> min() {
-        return (std::numeric_limits<double>::min)();
-    }
-
-    static cg::CG<double> max() {
-        return (std::numeric_limits<double>::max)();
-    }
-
-    static cg::CG<double> quiet_NaN() {
-        return std::numeric_limits<double>::quiet_NaN();
-    }
-
-    static const int digits10 
-        = std::numeric_limits<double>::digits10;
-};
+CPPAD_NUMERIC_LIMITS(double, cg::CG<double>)
 
 /**
  * Specialization of the machine epsilon for CG<double>
diff --git a/include/cppad/cg/base_float.hpp b/include/cppad/cg/base_float.hpp
index 57ac8522..4dd50d8f 100644
--- a/include/cppad/cg/base_float.hpp
+++ b/include/cppad/cg/base_float.hpp
@@ -20,29 +20,7 @@ namespace CppAD {
 /**
  * Specialization of the numeric_limits for floats
  */
-template <>
-class numeric_limits<cg::CG<float> > {
-public:
-
-    static cg::CG<float> epsilon() {
-        return std::numeric_limits<float>::epsilon();
-    }
-
-    static cg::CG<float> min() {
-        return std::numeric_limits<float>::min();
-    }
-
-    static cg::CG<float> max() {
-        return std::numeric_limits<float>::max();
-    }
-
-    static cg::CG<float> quiet_NaN() {
-        return std::numeric_limits<float>::quiet_NaN();
-    }
-
-    static const int digits10 
-        = std::numeric_limits<float>::digits10;
-};
+CPPAD_NUMERIC_LIMITS(float, cg::CG<float>)
 
 /**
  * Specialization of the machine epsilon for CG<float>