From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Tue, 8 May 2018 08:35:32 +0000 (+0800)
Subject: Use the appropriate type to state a zero.
X-Git-Tag: v9.1.0-rc1~1174^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8b9afddba2b781a1bbf93e058471d91e92116935;p=dealii.git

Use the appropriate type to state a zero.

Specifically, make sure that a statement also compiles if we are working with
complex-valued data.
---

diff --git a/include/deal.II/matrix_free/matrix_free.h b/include/deal.II/matrix_free/matrix_free.h
index ed36ce5772..ef2d78fbc7 100644
--- a/include/deal.II/matrix_free/matrix_free.h
+++ b/include/deal.II/matrix_free/matrix_free.h
@@ -2759,7 +2759,7 @@ namespace internal
                             LinearAlgebra::distributed::Vector<Number> &vec) const
     {
       if (range_index == numbers::invalid_unsigned_int)
-        vec = 0;
+        vec = Number();
       else
         {
           const unsigned int mf_component = find_vector_in_mf(vec, false);