NAME
          pnet_outlen - Get length of output buffer

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

          int pnet_outlen(const Pnet *pnet);

     DESCRIPTION
          Function returns the number of nodes that  have to be stored
          in the  output buffer. Function is implemented as a macro.
          The argument of pnet_outlen is:

          pnet Pointer to initialized Pnet struct

     RETURN VALUE
          Upon successful completion length of output buffer is
          returned.


     AUTHORS
          For authors and contributors see AUTHORS file


     COPYRIGHT
          (C) Potsdam Institute for Climate Impact Research (PIK), see
          COPYRIGHT file


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