--- trunk/mdtools/headers/ForceFields.hpp	2003/01/10 17:27:28	232
+++ trunk/mdtools/headers/ForceFields.hpp	2003/01/10 21:55:45	233
@@ -124,10 +124,24 @@ class LJ_FF : public ForceFields{ (public)
   void initializeBonds( bond_pair* the_bonds );
   void initializeBends( bend_set* the_bends );
   void initializeTorsions( torsion_set* the_torsions );
+  void setLJfortran( void (*fortranSub)( double* positionArray,
+					 double* forceArray,
+					 double* potentialEnergy,
+					 short int* doPotentialCalc ) ){
+    doLJfortran = fortranSub;
+  }
 
+
 private:
 
   void fastForward( char* stopText, char* searchOwner );
+  
+  // set our sister fortran module's function to be our own.
+  void wrapMe( void );
+  void (*doLJfortran)( double* positionArray,
+		       double* forceArray,
+		       double* potentialEnergy,
+		       short int* doPotentialCalc );
 
 };