! This file created from f77/attr/attrmpi1f.f with f77tof90

! -*- Mode: Fortran; -*- 

!

!  (C) 2003 by Argonne National Laboratory.

!      See COPYRIGHT in top-level directory.

!

      program main

      use mpi

      integer value, wsize, wrank, extra, mykey

      integer rvalue, svalue, ncomm

      logical flag

      integer ierr, errs

!

      errs = 0

      call mtest_init( ierr )

      call mpi_comm_size( MPI_COMM_WORLD, wsize, ierr )

      call mpi_comm_rank( MPI_COMM_WORLD, wrank, ierr )

!

!     Simple attribute put and get

!

      call mpi_keyval_create( MPI_NULL_COPY_FN, MPI_NULL_DELETE_FN, &

      &     mykey, extra,ierr ) 

      call mpi_attr_get( MPI_COMM_WORLD, mykey, value, flag, ierr )

      if (flag) then

         errs = errs + 1

         print *, &

      &       "Did not get flag==.false. for attribute that was not set"

      endif

!

      value = 1234567

      svalue = value

      call mpi_attr_put( MPI_COMM_WORLD, mykey, value, ierr )

      value = -9876543

      call mpi_attr_get( MPI_COMM_WORLD, mykey, rvalue, flag, ierr )

      if (.not. flag) then

         errs = errs + 1

         print *, "Did not find attribute after set"

      else

         if (rvalue .ne. svalue) then

            errs = errs + 1

            print *, "Attribute value ", rvalue, " should be ", svalue

         endif

      endif

      value = -123456

      svalue = value

      call mpi_attr_put( MPI_COMM_WORLD, mykey, value, ierr )

      value = 987654

      call mpi_attr_get( MPI_COMM_WORLD, mykey, rvalue, flag, ierr )

      if (.not. flag) then

         errs = errs + 1

         print *, "Did not find attribute after set (neg)"

      else

         if (rvalue .ne. svalue) then

            errs = errs + 1

            print *, "Neg Attribute value ", rvalue," should be ",svalue

         endif

      endif

!      

      call mpi_keyval_free( mykey, ierr )

      call mtest_finalize( errs )

      end