void smpi_datatype_commit(MPI_Datatype* datatype);
-
+void smpi_empty_status(MPI_Status * status);
MPI_Op smpi_op_new(MPI_User_function * function, int commute);
void smpi_op_destroy(MPI_Op op);
void smpi_op_apply(MPI_Op op, void *invec, void *inoutvec, int *len,