NAME

       MPI_Group_range_excl - Produces a group by excluding ranges of processes from an existing group.

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Group_range_excl(MPI_Group group, int n, int ranges[][3],
            MPI_Group *newgroup)

Fortran Syntax

       INCLUDE 'mpif.h'
       MPI_GROUP_RANGE_EXCL(GROUP, N, RANGES, NEWGROUP, IERROR)
            INTEGER   GROUP, N, RANGES(3,*), NEWGROUP, IERROR

C++ Syntax

       #include <mpi.h>
       Group Group::Range_excl(int n, const int ranges[][3]) const

INPUT PARAMETERS

       group     Group (handle).

       n         Number of triplets in array ranges (integer).

       ranges    A  one-dimensional  array  of  integer  triplets  of  the form (first rank, last rank, stride),
                 indicating the ranks in group of processes to be excluded from the output group newgroup.

OUTPUT PARAMETERS

       newgroup  New group derived from above, preserving the order in group (handle).

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       Each computed rank must be a valid rank in group and all computed ranks must be  distinct,  or  else  the
       program is erroneous.

       The  functionality  of  this routine is specified to be equivalent to expanding the array of ranges to an
       array of  the  excluded  ranks  and  passing  the  resulting  array  of  ranks  and  other  arguments  to
       MPI_Group_excl. A call to MPI_Group_excl is equivalent to a call to MPI_Group_range_excl with each rank i
       in ranks replaced by the triplet (i,i,1) in the argument ranges.

ERRORS

       Almost all MPI routines return an error value; C routines as  the  value  of  the  function  and  Fortran
       routines in the last argument. C++ functions do not return errors. If the default error handler is set to
       MPI::ERRORS_THROW_EXCEPTIONS, then on error the  C++  exception  mechanism  will  be  used  to  throw  an
       MPI::Exception object.

       Before  the  error  value  is  returned,  the current MPI error handler is called. By default, this error
       handler aborts the MPI job, except for I/O function  errors.  The  error  handler  may  be  changed  with
       MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values
       to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

SEE ALSO

       MPI_Group_excl
       MPI_Group_free