--- trunk/OOPSE/libmdtools/Atom.hpp	2003/10/28 16:03:37	829
+++ trunk/OOPSE/libmdtools/Atom.hpp	2003/12/12 15:42:13	878
@@ -212,6 +212,16 @@ class DirectionalAtom : public Atom { (private)
   void body2Lab( double r[3] );
 
 
+  // Four functions added for derivatives with respect to Euler Angles:
+  // (Needed for minimization routines):
+
+  void getGrad(double gradient[6] );
+  void getEulerAngles( double myEuler[3] );
+
+  double max(double x, double y);
+  double min(double x, double y);
+  
+
 private:
   int dIndex;