void smpi_mpi_win_get_group(MPI_Win win, MPI_Group* group){
if(win->comm != MPI_COMM_NULL){
*group = smpi_comm_group(win->comm);
void smpi_mpi_win_get_group(MPI_Win win, MPI_Group* group){
if(win->comm != MPI_COMM_NULL){
*group = smpi_comm_group(win->comm);