From: wolf <wolf@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Fri, 27 Jul 2001 12:00:26 +0000 (+0000)
Subject: Check reduced residual for equality as well.
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e12df76cfbb27dee1769d98114e9c6e42beda8f6;p=dealii-svn.git

Check reduced residual for equality as well.


git-svn-id: https://svn.dealii.org/trunk@4861 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/lac/source/solver_control.cc b/deal.II/lac/source/solver_control.cc
index 3660cfd05d..9894feaa8b 100644
--- a/deal.II/lac/source/solver_control.cc
+++ b/deal.II/lac/source/solver_control.cc
@@ -216,13 +216,20 @@ SolverControl::State
 ReductionControl::check (const unsigned int step,
 			 const double check_value)
 {
+				   // if this is the first time we
+				   // come here, then store the
+				   // residual for later comparisons
   if (step==0)
     {
       initial_val = check_value;
       reduced_tol = check_value * reduce;
     };
 
-  if (check_value < reduced_tol)
+				   // check whether desired reduction
+				   // has been achieved. also check
+				   // for equality in case initial
+				   // residual already was zero
+  if (check_value <= reduced_tol)
     {
       if (_log_result)
 	deallog << "Convergence step " << step