diff --git a/test/test_mixed_cpp_dec_float.cpp b/test/test_mixed_cpp_dec_float.cpp
@@ -0,0 +1,33 @@
+///////////////////////////////////////////////////////////////
+//  Copyright 2012 John Maddock. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_
+
+#ifdef _MSC_VER
+#  define _SCL_SECURE_NO_WARNINGS
+#endif
+
+#include <boost/multiprecision/cpp_dec_float.hpp>
+#include "test_mixed.hpp"
+
+int main()
+{
+   try{
+      typedef boost::multiprecision::number<boost::multiprecision::cpp_dec_float<100>, boost::multiprecision::et_on> big_type1;
+      typedef boost::multiprecision::number<boost::multiprecision::cpp_dec_float<50>, boost::multiprecision::et_on> small_type1;
+      typedef boost::multiprecision::number<boost::multiprecision::cpp_dec_float<100>, boost::multiprecision::et_off> big_type2;
+      typedef boost::multiprecision::number<boost::multiprecision::cpp_dec_float<50>, boost::multiprecision::et_off> small_type2;
+
+      test<big_type1, small_type1>();
+      test<big_type2, small_type2>();
+      test<big_type1, small_type2>();
+      test<big_type2, small_type1>();
+   }
+   catch(const std::exception& e)
+   {
+      std::cout << "Failed with unexpected exception: " << e.what() << std::endl;
+      return 1;
+   }
+   return boost::report_errors();
+}
+
diff --git a/test/test_mixed_mpf_float.cpp b/test/test_mixed_mpf_float.cpp
@@ -0,0 +1,33 @@
+///////////////////////////////////////////////////////////////
+//  Copyright 2012 John Maddock. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_
+
+#ifdef _MSC_VER
+#  define _SCL_SECURE_NO_WARNINGS
+#endif
+
+#include <boost/multiprecision/gmp.hpp>
+#include "test_mixed.hpp"
+
+int main()
+{
+   try{
+      typedef boost::multiprecision::number<boost::multiprecision::gmp_float<100>, boost::multiprecision::et_on> big_type1;
+      typedef boost::multiprecision::number<boost::multiprecision::gmp_float<50>, boost::multiprecision::et_on> small_type1;
+      typedef boost::multiprecision::number<boost::multiprecision::gmp_float<100>, boost::multiprecision::et_off> big_type2;
+      typedef boost::multiprecision::number<boost::multiprecision::gmp_float<50>, boost::multiprecision::et_off> small_type2;
+
+      test<big_type1, small_type1>();
+      test<big_type2, small_type2>();
+      test<big_type1, small_type2>();
+      test<big_type2, small_type1>();
+   }
+   catch(const std::exception& e)
+   {
+      std::cout << "Failed with unexpected exception: " << e.what() << std::endl;
+      return 1;
+   }
+   return boost::report_errors();
+}
+
diff --git a/test/test_mixed_mpfr_float.cpp b/test/test_mixed_mpfr_float.cpp
@@ -0,0 +1,33 @@
+///////////////////////////////////////////////////////////////
+//  Copyright 2012 John Maddock. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_
+
+#ifdef _MSC_VER
+#  define _SCL_SECURE_NO_WARNINGS
+#endif
+
+#include <boost/multiprecision/mpfr.hpp>
+#include "test_mixed.hpp"
+
+int main()
+{
+   try{
+      typedef boost::multiprecision::number<boost::multiprecision::mpfr_float_backend<100>, boost::multiprecision::et_on> big_type1;
+      typedef boost::multiprecision::number<boost::multiprecision::mpfr_float_backend<50>, boost::multiprecision::et_on> small_type1;
+      typedef boost::multiprecision::number<boost::multiprecision::mpfr_float_backend<100>, boost::multiprecision::et_off> big_type2;
+      typedef boost::multiprecision::number<boost::multiprecision::mpfr_float_backend<50>, boost::multiprecision::et_off> small_type2;
+
+      test<big_type1, small_type1>();
+      test<big_type2, small_type2>();
+      test<big_type1, small_type2>();
+      test<big_type2, small_type1>();
+   }
+   catch(const std::exception& e)
+   {
+      std::cout << "Failed with unexpected exception: " << e.what() << std::endl;
+      return 1;
+   }
+   return boost::report_errors();
+}
+