         NAME
              pnet_outindex - Get index for output buffer

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

              int pnet_outindex(const Pnet *pnet,int index);

         DESCRIPTION
              Function returns index of node that has to be stored in the
              output buffer. Function is implemented as a macro.  The
              arguments of pnet_outindex are:

              pnet Pointer to initialized Pnet struct

              index
                   Index in output buffer. Must be
                   0<=index<pnet_outlen(pnet).

         RETURN VALUE
              Upon successful completion number of connections 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)