modify Assert in fe_tools_interpolate for complex numbers

diff --git a/source/fe/fe_tools_interpolate.cc b/source/fe/fe_tools_interpolate.cc
index 5f4c02f06923bcc432b1be7ae16c8fc75a296f75..382e1d2f07c58de4c17fe27c563f20dae5196b17 100644 (file)
--- a/source/fe/fe_tools_interpolate.cc
+++ b/source/fe/fe_tools_interpolate.cc
@@ -222,7 +222,8 @@ namespace FETools
     for (types::global_dof_index i=0; i<dof2.n_dofs(); ++i)
       if (locally_owned_dofs.is_element(i))
         {
-          Assert(touch_count(i)!=0, ExcInternalError());
+          const typename OutVector::value_type touch_i = touch_count(i);
+          Assert( touch_i != typename OutVector::value_type(), ExcInternalError());
           u2(i) /= touch_count(i);
         }