1!
2! Copyright (C) by Argonne National Laboratory
3!     See COPYRIGHT in top-level directory
4!
5
6subroutine MPI_Iscatterv_f08ts(sendbuf, sendcounts, displs, sendtype, recvbuf, recvcount, &
7    recvtype, root, comm, request, ierror)
8    use, intrinsic :: iso_c_binding, only : c_int
9    use :: mpi_f08, only : MPI_Datatype, MPI_Comm, MPI_Request
10    use :: mpi_c_interface, only : c_Datatype, c_Comm, c_Request
11    use :: mpi_c_interface, only : MPIR_Iscatterv_cdesc, MPIR_Comm_size_c
12
13    implicit none
14
15    type(*), dimension(..), intent(in), asynchronous :: sendbuf
16    type(*), dimension(..), asynchronous :: recvbuf
17    integer, intent(in)  :: recvcount
18    integer, intent(in)  :: root
19    integer, intent(in)  :: sendcounts(*)
20    integer, intent(in)  :: displs(*)
21    type(MPI_Datatype), intent(in)  :: sendtype
22    type(MPI_Datatype), intent(in)  :: recvtype
23    type(MPI_Comm), intent(in)  :: comm
24    type(MPI_Request), intent(out)  :: request
25    integer, optional, intent(out)  :: ierror
26
27    integer(c_int) :: recvcount_c
28    integer(c_int) :: root_c
29    integer(c_int), allocatable :: sendcounts_c(:)
30    integer(c_int), allocatable :: displs_c(:)
31    integer(c_Datatype) :: sendtype_c
32    integer(c_Datatype) :: recvtype_c
33    integer(c_Comm) :: comm_c
34    integer(c_Request) :: request_c
35    integer(c_int) :: ierror_c
36    integer(c_int) :: err, length ! To get length of assumed-size arrays
37
38    if (c_int == kind(0)) then
39        ierror_c = MPIR_Iscatterv_cdesc(sendbuf, sendcounts, displs, sendtype%MPI_VAL, recvbuf, &
40            recvcount, recvtype%MPI_VAL, root, comm%MPI_VAL, request%MPI_VAL)
41    else
42        sendtype_c = sendtype%MPI_VAL
43        recvcount_c = recvcount
44        recvtype_c = recvtype%MPI_VAL
45        root_c = root
46        comm_c = comm%MPI_VAL
47
48        err = MPIR_Comm_size_c(comm_c, length)
49        sendcounts_c = sendcounts(1:length)
50        displs_c = displs(1:length)
51
52        ierror_c = MPIR_Iscatterv_cdesc(sendbuf, sendcounts_c, displs_c, sendtype_c, recvbuf, recvcount_c, recvtype_c, &
53            root_c, comm_c, request_c)
54        request%MPI_VAL = request_c
55    end if
56
57    if(present(ierror)) ierror = ierror_c
58
59end subroutine MPI_Iscatterv_f08ts
60