From: Matthias Maier <tamiko@43-1.org>
Date: Tue, 20 Mar 2018 00:29:33 +0000 (-0500)
Subject: Bugfix: Set a value to zero with correct number type
X-Git-Tag: v9.0.0-rc1~307^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F6067%2Fhead;p=dealii.git

Bugfix: Set a value to zero with correct number type

Otherwise deal.II fails to build with complex-valued PETSc scalar:

.../source/non_matching/coupling.cc:241:29: error: ambiguous overload for ‘operator=’
(operand types are ‘dealii::FullMatrix<std::complex<double> >’ and ‘int’)

                 cell_matrix = 0;
                 ~~~~~~~~~~~~^~~
---

diff --git a/source/non_matching/coupling.cc b/source/non_matching/coupling.cc
index 2951c44e56..bd4ae01cc6 100644
--- a/source/non_matching/coupling.cc
+++ b/source/non_matching/coupling.cc
@@ -238,7 +238,7 @@ namespace NonMatching
                 ocell->get_dof_indices(odofs);
 
                 // Reset the matrices.
-                cell_matrix = 0;
+                cell_matrix = typename Matrix::value_type();
 
                 for (unsigned int i=0; i<space_dh.get_fe().dofs_per_cell; ++i)
                   {