From 0c17f7fb6561cc6e8b041a90df486aaddc154c5a Mon Sep 17 00:00:00 2001
From: Joachim Schoeberl <joachim.schoeberl@tuwien.ac.at>
Date: Wed, 12 Oct 2011 20:53:13 +0000
Subject: [PATCH] strange fix for msvc 2010

---
 libsrc/gprim/geomfuncs.hpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/libsrc/gprim/geomfuncs.hpp b/libsrc/gprim/geomfuncs.hpp
index 36c96d32..66cbca81 100644
--- a/libsrc/gprim/geomfuncs.hpp
+++ b/libsrc/gprim/geomfuncs.hpp
@@ -74,7 +74,15 @@ namespace netgen
 
 
 
-  inline Vec<3> Cross (const Vec<3> & v1, const Vec<3> & v2)
+
+  /*
+    new wrong code problem with MSVC2010:
+    using Cross ( & , & ) computes wrong cross-product, problem arises in 
+    Surface::DefineTangentialPlane, e.g. with example boxcyl.geo
+   */
+  // inline Vec<3> Cross (const Vec<3> & v1, const Vec<3> & v2)
+
+  inline Vec<3> Cross (Vec<3> v1, Vec<3> v2)
   {
     return Vec<3> 
       ( v1(1) * v2(2) - v1(2) * v2(1),