Add another template specialization for ProductType.

diff --git a/include/deal.II/base/template_constraints.h b/include/deal.II/base/template_constraints.h
index a8f08c7436cabcf3cad8b38f06e1f50133fd2bb0..80a7e1992b5982b777df7988cb8cb5ed7dc892c6 100644 (file)
--- a/include/deal.II/base/template_constraints.h
+++ b/include/deal.II/base/template_constraints.h
@@ -394,6 +394,12 @@ struct ProductType<double,bool>
 // Annoyingly, there is no std::complex<T>::operator*(U) for scalars U
 // other than T. Consequently, even with C++11, we need the following
 // specializations:
+template <typename T>
+struct ProductType<std::complex<T>,std::complex<T> >
+{
+  typedef std::complex<T> type;
+};
+
 template <typename T, typename U>
 struct ProductType<std::complex<T>,std::complex<U> >
 {