From b2852c77b85642ac02a84e1245f5b2949a89994a Mon Sep 17 00:00:00 2001
From: Oliver Sander <sander@igpm.rwth-aachen.de>
Date: Thu, 14 Feb 2013 16:07:52 +0000
Subject: [PATCH] fix sign bug in dFdp

[[Imported from SVN: r9194]]
---
 dune/gfe/hyperbolichalfspacepoint.hh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dune/gfe/hyperbolichalfspacepoint.hh b/dune/gfe/hyperbolichalfspacepoint.hh
index 192236b0..3c11048f 100644
--- a/dune/gfe/hyperbolichalfspacepoint.hh
+++ b/dune/gfe/hyperbolichalfspacepoint.hh
@@ -56,7 +56,7 @@ class HyperbolicHalfspacePoint
         Dune::FieldVector<T,N> result;
         
         for (size_t i=0; i<N-1; i++)
-            result[i] = ( q.data_[i] - p.data_[i] ) / (q.data_[N-1] * p.data_[N-1]);
+            result[i] = ( p.data_[i] - q.data_[i] ) / (q.data_[N-1] * p.data_[N-1]);
         
         result[N-1] = - diffNormSquared / (2*p.data_[N-1]*p.data_[N-1]*q.data_[N-1]) + (p.data_[N-1] - q.data_[N-1]) / (p.data_[N-1]*q.data_[N-1]);
         
-- 
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