void Group::destroy()
{
if(this != MPI_COMM_WORLD->group()
- && this != MPI_GROUP_NULL
&& this != MPI_GROUP_EMPTY)
this->unuse();
}
} else if (n == m_size) {
*newgroup = this;
if(this!= MPI_COMM_WORLD->group()
- && this != MPI_GROUP_NULL
&& this != MPI_COMM_SELF->group()
&& this != MPI_GROUP_EMPTY)
this->use();