uses long double for p2p cutoff computations

cpp/particles/p2p/p2p_distr_mpi.hpp

@@ -96,9 +96,9 @@ protected:
     std::array<real_number,3> spatial_box_width;
     std::array<real_number,3> spatial_box_offset;
 
-    const real_number cutoff_radius_compute;
+    const long double cutoff_radius_compute;
     const int nb_cells_factor;
-    const real_number cutoff_radius;
+    const long double cutoff_radius;
     std::array<long int,3> nb_cell_levels;
 
     template <class DataType, int sizeElement>
@@ -570,8 +570,14 @@ public:
                            MPI_INT,
                            0,
                            MPI_COMM_WORLD);
-                MPI_Gather(willsend.data(), nb_processes_involved, MPI_INT, willsendall.data(),
-                            nb_processes_involved, MPI_INT, 0, MPI_COMM_WORLD);
+                MPI_Gather(willsend.data(),
+                           nb_processes_involved,
+                           MPI_INT,
+                           willsendall.data(),
+                           nb_processes_involved,
+                           MPI_INT,
+                           0,
+                           MPI_COMM_WORLD);
 
                 for(int idxproc = 0 ; idxproc < nb_processes_involved ; ++idxproc){
                     for(int idxtest = 0 ; idxtest < nb_processes_involved ; ++idxtest){
@@ -581,10 +587,22 @@ public:
                 }
             }
             else{
-                MPI_Gather(willrecv.data(), nb_processes_involved, MPI_INT, nullptr,
-                            0, MPI_INT, 0, MPI_COMM_WORLD);
-                MPI_Gather(willsend.data(), nb_processes_involved, MPI_INT, nullptr,
-                            0, MPI_INT, 0, MPI_COMM_WORLD);
+                MPI_Gather(willrecv.data(),
+                           nb_processes_involved,
+                           MPI_INT,
+                           nullptr,
+                           0,
+                           MPI_INT,
+                           0,
+                           MPI_COMM_WORLD);
+                MPI_Gather(willsend.data(),
+                           nb_processes_involved,
+                           MPI_INT,
+                           nullptr,
+                           0,
+                           MPI_INT,
+                           0,
+                           MPI_COMM_WORLD);
             }
         }
 #endif