         NAME
              isroot - Determines whether task is root task

         SYNOPSIS
              #include "lpj.h"

              Bool isroot(Config config);

         DESCRIPTION
              Function determines whether MPI task is root task. Returns
              always TRUE in the sequential version. Is implemented as a
              macro.  The argument of isroot is:

              config
                   LPJmL configuration data. Must be initialized by
                   initmpiconfig() or initconfig().

         RETURN VALUE
              Returns TRUE if MPI task is root task, FALSE otherwise.

         AUTHORS
              Werner von Bloh (Werner.von.Bloh@pik-potsdam.de), Sibyll
              Schaphoff (Sibyll.Schaphoff@pik-potsdam.de), Stefanie Rost
              (Jachner) (Stefanie.Rost@pik-potsdam.de), Marlies
              Gumpenberger (Marlies.Gumpenberger@pik-potsdam.de), Tim
              Beringer (Erbrecht) (Tim.Beringer@pik-potsdam.de), Christoph
              Mueller (Christoph.Mueller@pik-potsdam.de) Jens Heinke
              (Jens.Heinke@pik-potsdam.de), Hester Biemans
              (Hester.Biemans@wur.nl), Kirsten Thonicke
              (Kirsten.Thonicke@pik-potsdam.de), Ursula Heyder
              (Ursula.Heyder@pik-potsdam.de),

         SEE ALSO
              initconfig(3)