!***********************************************************************
!*                   GNU Lesser General Public License
!*
!* This file is part of the GFDL Flexible Modeling System (FMS).
!*
!* FMS is free software: you can redistribute it and/or modify it under
!* the terms of the GNU Lesser General Public License as published by
!* the Free Software Foundation, either version 3 of the License, or (at
!* your option) any later version.
!*
!* FMS is distributed in the hope that it will be useful, but WITHOUT
!* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
!* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
!* for more details.
!*
!* You should have received a copy of the GNU Lesser General Public
!* License along with FMS.  If not, see <http://www.gnu.org/licenses/>.
!***********************************************************************
    subroutine MPP_REDUCE_0D_( a, pelist )
!find the max of scalar a the PEs in pelist (all PEs if this argument is omitted)
!result is also automatically broadcast to all PEs
      MPP_TYPE_, intent(inout) :: a
      integer, intent(in), optional :: pelist(0:)
      integer :: n
      if( .NOT.module_is_initialized )call mpp_error( FATAL, 'MPP_REDUCE_0D: You must first call mpp_init.' )
      return
    end subroutine MPP_REDUCE_0D_

    subroutine MPP_REDUCE_1D_( a, length, pelist )
!find the max of scalar a the PEs in pelist (all PEs if this argument is omitted)
!result is also automatically broadcast to all PEs
      MPP_TYPE_, intent(inout) :: a(:)
      integer,   intent(in)    :: length
      integer, intent(in), optional :: pelist(0:)
      integer :: n
      if( .NOT.module_is_initialized )call mpp_error( FATAL, 'MPP_REDUCE_1D: You must first call mpp_init.' )
      return
    end subroutine MPP_REDUCE_1D_