diff --git a/test/array_cwise.cpp b/test/array_cwise.cpp
index d032e0b..01f5a99 100644
--- a/test/array_cwise.cpp
+++ b/test/array_cwise.cpp
@@ -65,7 +65,7 @@
 template <typename Scalar>
 void special_value_pairs(Array<Scalar, Dynamic, Dynamic>& x, Array<Scalar, Dynamic, Dynamic>& y) {
   std::vector<Scalar> vals = special_values<Scalar>();
-  int num_cases = vals.size() * vals.size();
+  std::size_t num_cases = vals.size() * vals.size();
   // ensure both vectorized and non-vectorized paths taken
   const Index num_repeats = 2 * (Index)internal::packet_traits<Scalar>::size + 1;
   x.resize(num_repeats, num_cases);
@@ -294,6 +294,7 @@
             bool success = both_nan || (exact_or_approx && same_sign);
             all_pass &= success;
             if (!success) {
+              std::cout << "Base type: " << type_name(base) << ", Exponent type: " << type_name(exponent) << std::endl;
               std::cout << "pow(" << bases(j) << "," << exponent << ")   =   " << a << " !=  " << e << std::endl;
             }
           }
@@ -1250,61 +1251,6 @@
   typed_logicals_test_impl<ArrayType>::run(m);
 }
 
-// print non-mangled typenames
-template <typename T>
-std::string printTypeInfo(const T&) {
-  return typeid(T).name();
-}
-template <>
-std::string printTypeInfo(const int8_t&) {
-  return "int8_t";
-}
-template <>
-std::string printTypeInfo(const int16_t&) {
-  return "int16_t";
-}
-template <>
-std::string printTypeInfo(const int32_t&) {
-  return "int32_t";
-}
-template <>
-std::string printTypeInfo(const int64_t&) {
-  return "int64_t";
-}
-template <>
-std::string printTypeInfo(const uint8_t&) {
-  return "uint8_t";
-}
-template <>
-std::string printTypeInfo(const uint16_t&) {
-  return "uint16_t";
-}
-template <>
-std::string printTypeInfo(const uint32_t&) {
-  return "uint32_t";
-}
-template <>
-std::string printTypeInfo(const uint64_t&) {
-  return "uint64_t";
-}
-template <>
-std::string printTypeInfo(const float&) {
-  return "float";
-}
-template <>
-std::string printTypeInfo(const double&) {
-  return "double";
-}
-// template<> std::string printTypeInfo(const long double&) { return "long double"; }
-template <>
-std::string printTypeInfo(const half&) {
-  return "half";
-}
-template <>
-std::string printTypeInfo(const bfloat16&) {
-  return "bfloat16";
-}
-
 template <typename SrcType, typename DstType, int RowsAtCompileTime, int ColsAtCompileTime>
 struct cast_test_impl {
   using SrcArray = Array<SrcType, RowsAtCompileTime, ColsAtCompileTime>;
@@ -1340,8 +1286,8 @@
           DstType dstVal = dst(i, j);
           bool isApprox = verifyIsApprox(dstVal, refVal);
           if (!isApprox)
-            std::cout << printTypeInfo(srcVal) << ": [" << +srcVal << "] to " << printTypeInfo(dstVal) << ": ["
-                      << +dstVal << "] != [" << +refVal << "]\n";
+            std::cout << type_name(srcVal) << ": [" << +srcVal << "] to " << type_name(dstVal) << ": [" << +dstVal
+                      << "] != [" << +refVal << "]\n";
           VERIFY(isApprox);
         }
     }
diff --git a/test/main.h b/test/main.h
index ca1748d..c7cc531 100644
--- a/test/main.h
+++ b/test/main.h
@@ -742,41 +742,81 @@
 };
 
 template <typename T>
-std::string type_name() {
-  return "other";
+std::string type_name(T) {
+  return typeid(T).name();
 }
 template <>
-std::string type_name<float>() {
+std::string type_name<float>(float) {
   return "float";
 }
 template <>
-std::string type_name<double>() {
+std::string type_name<double>(double) {
   return "double";
 }
 template <>
-std::string type_name<long double>() {
+std::string type_name<long double>(long double) {
   return "long double";
 }
 template <>
-std::string type_name<int>() {
-  return "int";
+std::string type_name<Eigen::half>(Eigen::half) {
+  return "half";
 }
 template <>
-std::string type_name<std::complex<float> >() {
+std::string type_name<Eigen::bfloat16>(Eigen::bfloat16) {
+  return "bfloat16";
+}
+template <>
+std::string type_name<int8_t>(int8_t) {
+  return "int8_t";
+}
+template <>
+std::string type_name<int16_t>(int16_t) {
+  return "int16_t";
+}
+template <>
+std::string type_name<int32_t>(int32_t) {
+  return "int32_t";
+}
+template <>
+std::string type_name<int64_t>(int64_t) {
+  return "int64_t";
+}
+template <>
+std::string type_name<uint8_t>(uint8_t) {
+  return "uint8_t";
+}
+template <>
+std::string type_name<uint16_t>(uint16_t) {
+  return "uint16_t";
+}
+template <>
+std::string type_name<uint32_t>(uint32_t) {
+  return "uint32_t";
+}
+template <>
+std::string type_name<uint64_t>(uint64_t) {
+  return "uint64_t";
+}
+template <>
+std::string type_name<std::complex<float> >(std::complex<float>) {
   return "complex<float>";
 }
 template <>
-std::string type_name<std::complex<double> >() {
+std::string type_name<std::complex<double> >(std::complex<double>) {
   return "complex<double>";
 }
 template <>
-std::string type_name<std::complex<long double> >() {
+std::string type_name<std::complex<long double> >(std::complex<long double>) {
   return "complex<long double>";
 }
 template <>
-std::string type_name<std::complex<int> >() {
+std::string type_name<std::complex<int> >(std::complex<int>) {
   return "complex<int>";
 }
+template <typename T>
+std::string type_name() {
+  return type_name(T());
+}
 
 using namespace Eigen;