text: #ifdef BITREP_MPI
  # include "mpi.h"
  #endif
  
  /* Conventional (non-reproducible) sum functions */
  namespace bitrep
  {
  
      /* Local functions */
      double convreduce(int n, const double* v);
  
  #ifdef BITREP_MPI
  
      /* Distributed functions */
      double convreduce(int n, int N, const double* v, MPI_Comm comm);
  
      /* Timing functions */
      double convreduce_timing(int n, int N, const double* v, MPI_Comm comm, double& tComp, double& tComm);
  #endif
  
  } // End namespace bitrep
  
  