--- trunk/OOPSE/libmdtools/SimInfo.cpp	2003/08/12 21:44:06	690
+++ trunk/OOPSE/libmdtools/SimInfo.cpp	2003/09/15 16:52:02	763
@@ -26,6 +26,7 @@ SimInfo::SimInfo(){
 SimInfo::SimInfo(){
   excludes = NULL;
   n_constraints = 0;
+  nZconstraints = 0;
   n_oriented = 0;
   n_dipoles = 0;
   ndf = 0;
@@ -598,4 +599,9 @@ vector<GenericData*> SimInfo::getProperties(){
   return result;
 }
 
+double SimInfo::matTrace3(double m[3][3]){
+  double trace;
+  trace = m[0][0] + m[1][1] + m[2][2];
 
+  return trace;
+}