#ifndef EP_LIB_COLLECTIVE_HPP_INCLUDED
#define EP_LIB_COLLECTIVE_HPP_INCLUDED

namespace ep_lib
{

  typedef void* MPI_Datatype;
  typedef void* MPI_Op;


  int MPI_Barrier(MPI_Comm comm);
 

  int MPI_Comm_dup(MPI_Comm comm, MPI_Comm *newcomm);

  int MPI_Reduce(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm);

  int MPI_Allreduce(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm);

  int MPI_Reduce_scatter(const void *sendbuf, void *recvbuf, const int recvcounts[], MPI_Datatype datatype, MPI_Op op, MPI_Comm comm);

  int MPI_Scan(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm);

  int MPI_Exscan(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm);

  int MPI_Bcast(void *buffer, int count, MPI_Datatype datatype, int root, MPI_Comm comm);

  int MPI_Gather(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm);
  
  int MPI_Allgather(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm);

  int MPI_Gatherv(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, const int recvcounts[], const int displs[],
                  MPI_Datatype recvtype, int root, MPI_Comm comm);
  int MPI_Allgatherv(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, const int recvcounts[], const int displs[],
                     MPI_Datatype recvtype, MPI_Comm comm);


  int MPI_Scatter(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm);

  int MPI_Scatterv(const void *sendbuf, const int sendcounts[], const int displs[], MPI_Datatype sendtype, void *recvbuf, int recvcount,
                   MPI_Datatype recvtype, int root, MPI_Comm comm);

  int MPI_Alltoall(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm);

  int MPI_Comm_split(MPI_Comm comm, int color, int key, MPI_Comm *newcomm);

  int MPI_Intercomm_create(MPI_Comm local_comm, int local_leader, MPI_Comm peer_comm, int remote_leader, int tag, MPI_Comm *newintercomm);

  
  
  
  //int MPI_Intercomm_create_from_world(MPI_Comm local_comm, int local_leader, void* peer_comm_ptr, int mpi_remote_leader, int tag, MPI_Comm *newintercomm);
  
  //int MPI_Intercomm_create_unique_leader(MPI_Comm local_comm, int local_leader, MPI_Comm peer_comm, int remote_leader, int tag, MPI_Comm *newintercomm);

  int MPI_Comm_create_endpoints(void* base_comm_ptr, int num_ep, MPI_Info info, MPI_Comm *& out_comm_hdls); // from EP to create endpoints



  int MPI_Intercomm_merge(MPI_Comm intercomm, bool high, MPI_Comm *newintracomm);

  //int MPI_Intercomm_merge_unique_leader(MPI_Comm intercomm, bool high, MPI_Comm *newintracomm);

}

#endif // EP_LIB_COLLECTIVE_HPP_INCLUDED