diff --git a/Eigen/src/Core/functors/UnaryFunctors.h b/Eigen/src/Core/functors/UnaryFunctors.h
index 28085bc14..f98801294 100644
--- a/Eigen/src/Core/functors/UnaryFunctors.h
+++ b/Eigen/src/Core/functors/UnaryFunctors.h
@@ -1085,7 +1085,7 @@ struct scalar_unary_pow_op {
   }
   EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE result_type operator()(const Scalar& a) const {
     EIGEN_USING_STD(pow);
-    return pow(a, m_exponent);
+    return static_cast<result_type>(pow(a, m_exponent));
   }
 
  private:
@@ -1096,12 +1096,12 @@ struct scalar_unary_pow_op {
 template <typename Scalar, typename ScalarExponent>
 struct scalar_unary_pow_op<Scalar, ScalarExponent, false, false, false, false> {
   EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE scalar_unary_pow_op(const ScalarExponent& exponent) : m_exponent(exponent) {
-    EIGEN_STATIC_ASSERT((is_same<Scalar, ScalarExponent>::value), NON_INTEGER_EXPONENT_MUST_BE_SAME_TYPE_AS_BASE);
+    EIGEN_STATIC_ASSERT((is_same<std::remove_const_t<Scalar>, std::remove_const_t<ScalarExponent>>::value), NON_INTEGER_EXPONENT_MUST_BE_SAME_TYPE_AS_BASE);
     EIGEN_STATIC_ASSERT((is_arithmetic<ScalarExponent>::value), EXPONENT_MUST_BE_ARITHMETIC);
   }
   EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Scalar operator()(const Scalar& a) const {
     EIGEN_USING_STD(pow);
-    return pow(a, m_exponent);
+    return static_cast<Scalar>(pow(a, m_exponent));
   }
   template <typename Packet>
   EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Packet packetOp(const Packet& a) const {