         NAME
              pnet_lo - Get lower bound for local sublattice

         SYNOPSIS
              #include <mpi.h>
              #include "pnet.h"

              int pnet_lo(const Pnet *pnet);

         DESCRIPTION
              Function returns lower bound for local sublattice. Function
              is implemented as a macro.  The argument of pnet_lo is:

              pnet Pointer to initialized Pnet struct

         RETURN VALUE
              Upon successful completion lower bound is returned.

         AUTHOR
              Werner von Bloh (bloh@pik-potsdam.de)

         SEE ALSO
              pnet_init(3), pnet_free(3), pnet_setup(3), pnet_hi(3),
              pnet_nodes(3)