--- trunk/OOPSE/libmdtools/ForceFields.cpp	2003/04/02 22:19:03	443
+++ trunk/OOPSE/libmdtools/ForceFields.cpp	2003/06/20 20:29:36	561
@@ -1,8 +1,12 @@
+#include <iostream>
+
+using namespace std;
+
+
 #include <cstdlib>
 
 #ifdef IS_MPI
 #include <mpi.h>
-#include <mpi++.h>
 #endif // is_mpi
 
 
@@ -16,7 +20,8 @@ void ForceFields::calcRcut( void ){
 
 #ifdef IS_MPI
   double tempBig = bigSigma;
-  MPI::COMM_WORLD.Allreduce( &tempBig, &bigSigma, 1, MPI_DOUBLE, MPI_MAX );
+  MPI_Allreduce( &tempBig, &bigSigma, 1, MPI_DOUBLE, MPI_MAX,
+		 MPI_COMM_WORLD);
 #endif  //is_mpi
 
   //calc rCut and rList
@@ -39,36 +44,18 @@ void ForceFields::doForces( int calcPot, int calcStres
   double* frc;
   double* pos;
   double* trq;
-  double* tau;
   double* A;
   double* u_l;;
   DirectionalAtom* dAtom;
 
-  double ut[3];
-
-  //u_l = new double[entry_plug->n_atoms];
-
   short int passedCalcPot = (short int)calcPot;
   short int passedCalcStress = (short int)calcStress;
 
-  // forces are zeroed here, before any are acumulated.
+  // forces are zeroed here, before any are accumulated.
   // NOTE: do not rezero the forces in Fortran.
 
-
   for(i=0; i<entry_plug->n_atoms; i++){
-    entry_plug->atoms[i]->zeroForces();
-
-    if( entry_plug->atoms[i]->isDirectional() ){
-      dAtom = (DirectionalAtom *)entry_plug->atoms[i];
-      dAtom->getU(ut);
-    
-
-      if(dAtom->getIndex()== 1){
-	std::cerr << "atom 2's u_l = " << ut[0] << ", " << ut[1]
-		  << ", " << ut[2] << "\n";
-      }
-    }
-    
+    entry_plug->atoms[i]->zeroForces();    
   }
 
   for(i=0; i<entry_plug->n_mol; i++ ){
@@ -80,28 +67,25 @@ void ForceFields::doForces( int calcPot, int calcStres
   trq = Atom::getTrqArray();
   A   = Atom::getAmatArray();
   u_l = Atom::getUlArray();
-  tau = entry_plug->tau;
 
-  
   isError = 0;
   entry_plug->lrPot = 0.0;
 
+  for (i=0; i<9; i++) {
+    entry_plug->tau[i] = 0.0;
+  }
 
-  
   fortranForceLoop( pos,
 		    A,
 		    u_l,
 		    frc,
 		    trq,
-		    tau,
+		    entry_plug->tau,
 		    &(entry_plug->lrPot), 
 		    &passedCalcPot,
 		    &passedCalcStress,
 		    &isError );
 
-
-  //  delete[] u_l;
-
   if( isError ){
     sprintf( painCave.errMsg,
 	     "Error returned from the fortran force calculation.\n" );