         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.

         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)