MPI_Group_difference - Makes a group from the difference
       of two groups


SYNOPSIS

       C:

            #include <mpi.h>

            int MPI_Group_difference ( group1, group2, group_out )
            MPI_Group group1, group2, *group_out;

       C++:

            #include <mpi.h>

            static Group Group::Difference(
            const Group&      group1,
            const Group&      group2)

       Fortran:

            INCLUDE "mpif.h" (or USE MPI)

            INTEGER group1, group2, newgroup, ierror

            CALL MPI_GROUP_DIFFERENCE(group1, group2, newgroup, ierror)


STANDARDS

       This release implements the MPI 1.2 standard, as
       documented by the MPI Forum in the spring 1997 release of
       MPI:  A Message Passing Interface Standard.


DESCRIPTION

       The MPI_Group_difference routine makes a group from the
       difference of two groups.  This routine accepts the
       following parameters:

       group1    Specifies the first group (handle)

       group2    Specifies the second group (handle)

       group_out Returns the difference group (handle)

       ierror    Specifies the return code value for successful
                 completion, which is in MPI_SUCCESS.
                 MPI_SUCCESS is defined in the mpif.h file.


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