From e8b0288f69a3e6bf55a2c470d90a0216d05e58e8 Mon Sep 17 00:00:00 2001
From: guido <guido@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Fri, 6 Oct 2000 10:41:33 +0000
Subject: [PATCH] Improved breakdown criterion?

git-svn-id: https://svn.dealii.org/trunk@3386 0785d39b-7218-0410-832d-ea1e28bc413d
---
 deal.II/lac/include/lac/solver_qmrs.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/deal.II/lac/include/lac/solver_qmrs.h b/deal.II/lac/include/lac/solver_qmrs.h
index 8cf343f4b1..356a30fe13 100644
--- a/deal.II/lac/include/lac/solver_qmrs.h
+++ b/deal.II/lac/include/lac/solver_qmrs.h
@@ -326,10 +326,10 @@ while (state == SolverControl::iterate)
       A.vmult(t,q);
 				       // Step 2
       sigma = q*t;
-
+      
 //TODO: Find a really good breakdown criterion
 // The absolute one detects breakdown instead of convergence
-      if (fabs(sigma) < additional_data.breakdown)
+      if (fabs(sigma/rho) < additional_data.breakdown)
 	return breakdown;
 				       // Step 3
       alpha = rho/sigma;
-- 
2.39.5