! This file created from f77/datatype/typem2f.f with f77tof90
!
! Copyright (C) by Argonne National Laboratory
!     See COPYRIGHT in top-level directory
!

      program main
      use mpi
      integer errs, ierr, i, intsize
      integer type1, type2, type3, type4, type5
      integer max_asizev
      parameter (max_asizev = 10)
      integer (kind=MPI_ADDRESS_KIND) aint, aintv(max_asizev)

      integer blocklens(max_asizev), dtypes(max_asizev)
      integer displs(max_asizev)
      integer recvbuf(6*max_asizev)
      integer sendbuf(max_asizev), status(MPI_STATUS_SIZE)
      integer rank, size

      errs = 0

      call mtest_init( ierr )

      call mpi_comm_size( MPI_COMM_WORLD, size, ierr )
      call mpi_comm_rank( MPI_COMM_WORLD, rank, ierr )
!
      call mpi_type_size( MPI_INTEGER, intsize, ierr )
!
      aintv(1) = 0
      aintv(2) = 3 * intsize
      call mpi_type_create_resized( MPI_INTEGER, aintv(1), aintv(2),  &
      &                              type1, ierr )
      call mpi_type_commit( type1, ierr )
      aintv(1) = -1
      aintv(2) = -1
      call mpi_type_get_extent( type1, aintv(1), aintv(2), ierr )
      if (aintv(1) .ne. 0) then
         errs = errs + 1
         print *, 'Did not get expected lb'
      endif
      if (aintv(2) .ne. 3*intsize) then
         errs = errs + 1
         print *, 'Did not get expected extent'
      endif
      aintv(1) = -1
      aintv(2) = -1
      call mpi_type_get_true_extent( type1, aintv(1), aintv(2), ierr )
      if (aintv(1) .ne. 0) then
         errs = errs + 1
         print *, 'Did not get expected true lb'
      endif
      if (aintv(2) .ne. intsize) then
         errs = errs + 1
         print *, 'Did not get expected true extent (', aintv(2), ') ', &
      &     ' expected ', intsize
      endif
!
      do i=1,10
         blocklens(i) = 1
         aintv(i)    = (i-1) * 3 * intsize
      enddo
      call mpi_type_create_hindexed( 10, blocklens, aintv,  &
      &                               MPI_INTEGER, type2, ierr )
      call mpi_type_commit( type2, ierr )
!
      aint = 3 * intsize
      call mpi_type_create_hvector( 10, 1, aint, MPI_INTEGER, type3,  &
      &                              ierr )
      call mpi_type_commit( type3, ierr )
!
      do i=1,10
         blocklens(i) = 1
         dtypes(i)    = MPI_INTEGER
         aintv(i)    = (i-1) * 3 * intsize
      enddo
      call mpi_type_create_struct( 10, blocklens, aintv, dtypes, &
      &                             type4, ierr )
      call mpi_type_commit( type4, ierr )

      do i=1,10
         displs(i)    = (i-1) * 3
      enddo
      call mpi_type_create_indexed_block( 10, 1, displs,  &
      &                               MPI_INTEGER, type5, ierr )
      call mpi_type_commit( type5, ierr )
!
! Using each time, send and receive using these types
      do i=1, max_asizev*3
         recvbuf(i) = -1
      enddo
      do i=1, max_asizev
         sendbuf(i) = i
      enddo
      call mpi_sendrecv( sendbuf, max_asizev, MPI_INTEGER, rank, 0,  &
      &                   recvbuf, max_asizev, type1, rank, 0,  &
      &                   MPI_COMM_WORLD, status, ierr )
      do i=1, max_asizev
         if (recvbuf(1+(i-1)*3) .ne. i ) then
            errs = errs + 1
            print *, 'type1:', i, 'th element = ', recvbuf(1+(i-1)*3)
         endif
      enddo
!
      do i=1, max_asizev*3
         recvbuf(i) = -1
      enddo
      do i=1, max_asizev
         sendbuf(i) = i
      enddo
      call mpi_sendrecv( sendbuf, max_asizev, MPI_INTEGER, rank, 0,  &
      &                   recvbuf, 1, type2, rank, 0,  &
      &                   MPI_COMM_WORLD, status, ierr )
      do i=1, max_asizev
         if (recvbuf(1+(i-1)*3) .ne. i ) then
            errs = errs + 1
            print *, 'type2:', i, 'th element = ', recvbuf(1+(i-1)*3)
         endif
      enddo
!
      do i=1, max_asizev*3
         recvbuf(i) = -1
      enddo
      do i=1, max_asizev
         sendbuf(i) = i
      enddo
      call mpi_sendrecv( sendbuf, max_asizev, MPI_INTEGER, rank, 0,  &
      &                   recvbuf, 1, type3, rank, 0,  &
      &                   MPI_COMM_WORLD, status, ierr )
      do i=1, max_asizev
         if (recvbuf(1+(i-1)*3) .ne. i ) then
            errs = errs + 1
            print *, 'type3:', i, 'th element = ', recvbuf(1+(i-1)*3)
         endif
      enddo
!
      do i=1, max_asizev*3
         recvbuf(i) = -1
      enddo
      do i=1, max_asizev
         sendbuf(i) = i
      enddo
      call mpi_sendrecv( sendbuf, max_asizev, MPI_INTEGER, rank, 0,  &
      &                   recvbuf, 1, type4, rank, 0,  &
      &                   MPI_COMM_WORLD, status, ierr )
      do i=1, max_asizev
         if (recvbuf(1+(i-1)*3) .ne. i ) then
            errs = errs + 1
            print *, 'type4:', i, 'th element = ', recvbuf(1+(i-1)*3)
         endif
      enddo
!
      do i=1, max_asizev*3
         recvbuf(i) = -1
      enddo
      do i=1, max_asizev
         sendbuf(i) = i
      enddo
      call mpi_sendrecv( sendbuf, max_asizev, MPI_INTEGER, rank, 0,  &
      &                   recvbuf, 1, type5, rank, 0,  &
      &                   MPI_COMM_WORLD, status, ierr )
      do i=1, max_asizev
         if (recvbuf(1+(i-1)*3) .ne. i ) then
            errs = errs + 1
            print *, 'type5:', i, 'th element = ', recvbuf(1+(i-1)*3)
         endif
      enddo
!
      call mpi_type_free( type1, ierr )
      call mpi_type_free( type2, ierr )
      call mpi_type_free( type3, ierr )
      call mpi_type_free( type4, ierr )
      call mpi_type_free( type5, ierr )

      call mtest_finalize( errs )

      end
