From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Thu, 17 Nov 2022 00:19:50 +0000 (-0700)
Subject: Simplify step-40.
X-Git-Tag: v9.5.0-rc1~841^2~2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b73fb4e85cb3428b2b9cd0063adb6363938a8fc3;p=dealii.git

Simplify step-40.
---

diff --git a/examples/step-40/step-40.cc b/examples/step-40/step-40.cc
index 4906261cd4..58958135d5 100644
--- a/examples/step-40/step-40.cc
+++ b/examples/step-40/step-40.cc
@@ -469,22 +469,16 @@ namespace Step40
                                                     mpi_communicator);
 
     SolverControl solver_control(dof_handler.n_dofs(), 1e-12);
+    LA::SolverCG  solver(solver_control);
 
-#ifdef USE_PETSC_LA
-    LA::SolverCG solver(solver_control, mpi_communicator);
-#else
-    LA::SolverCG solver(solver_control);
-#endif
-
-    LA::MPI::PreconditionAMG preconditioner;
 
     LA::MPI::PreconditionAMG::AdditionalData data;
-
 #ifdef USE_PETSC_LA
     data.symmetric_operator = true;
 #else
     /* Trilinos defaults are good */
 #endif
+    LA::MPI::PreconditionAMG preconditioner;
     preconditioner.initialize(system_matrix, data);
 
     solver.solve(system_matrix,