add a method to reset the potential and forces of the FP2PParticleContainer

Src/Components/FBasicParticleContainer.hpp

@@ -306,6 +306,11 @@ public:
             memset(attributes[idx], 0, sizeof(AttributeClass) * allocatedParticles);
         }
     }
+
+    /** Reset the attributes to zeros */
+    void resetToInitialState(const int idxAttribute){
+        memset(attributes[idxAttribute], 0, sizeof(AttributeClass) * allocatedParticles);
+    }
 };
 
 

Src/Kernels/P2P/FP2PParticleContainer.hpp

@@ -62,6 +62,12 @@ public:
     const FReal* getForcesZ(const int idxLhs = 0) const {
         return Parent::getAttribute(NRHS+3*NLHS+idxLhs);
     }
+
+    void resetForcesAndPotential(){
+        for(int idx = 0 ; idx < 4*NLHS ; ++idx){
+            Parent::resetToInitialState(idx + NRHS);
+        }
+    }
 };
 
 #endif // FP2PPARTICLECONTAINER_HPP

UTests/utestRotationDirectSeveralTime.cpp

@@ -92,7 +92,7 @@ class TestRotationDirectSeveralTime : public FUTester<TestRotationDirectSeveralT
 			});
             //  If we want to reset the leaf
             //tree.forEachLeaf([&](LeafClass* leaf){
-            //		leaf->resetToInitialState();
+            //		leaf->resetForcesAndPotential();
             //}
 		}
 		/////////////////////////////////////////////////////////////////////////////////////////////////