| 40 |  | * [5]  Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011). | 
| 41 |  | */ | 
| 42 |  |  | 
| 43 | + | #ifdef IS_MPI | 
| 44 | + | #include <mpi.h> | 
| 45 | + | #endif | 
| 46 | + |  | 
| 47 |  | #include <algorithm> | 
| 48 |  | #include <cassert> | 
| 49 |  | #include <string> | 
| 51 |  |  | 
| 52 |  | #include "utils/OpenMDBitSet.hpp" | 
| 53 |  | #include "utils/Algorithm.hpp" | 
| 50 | – | #ifdef IS_MPI | 
| 51 | – | #include <mpi.h> | 
| 52 | – | #endif | 
| 54 |  |  | 
| 55 |  | namespace OpenMD { | 
| 56 |  | int OpenMDBitSet::countBits() { | 
| 210 |  |  | 
| 211 |  | std::vector<int> bsInt(bitset_.begin(), bitset_.end()); | 
| 212 |  |  | 
| 213 | < | MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &bsInt[0], | 
| 214 | < | bsInt.size(), MPI::INT, MPI::LOR); | 
| 213 | > | MPI_Allreduce(MPI_IN_PLACE, &bsInt[0], | 
| 214 | > | bsInt.size(), MPI_INT, MPI_LOR, MPI_COMM_WORLD); | 
| 215 |  |  | 
| 216 |  | std::transform(bsInt.begin(), bsInt.end(), | 
| 217 |  | std::back_inserter( result.bitset_ ), to_bool<int>()); |