SYNTAX
------

C Syntax
^^^^^^^^

.. code-block:: c

    int MPI_Alltoallw(const void* sendbuf, const int sendcounts[], const
        int sdispls[], const MPI_Datatype sendtypes[], void* recvbuf,
        const int recvcounts[], const int rdispls[], const MPI_Datatype
        recvtypes[], MPI_Comm comm)

    int MPI_Alltoallw_c(const void* sendbuf, const MPI_Count
        sendcounts[], const MPI_Aint sdispls[], const MPI_Datatype
        sendtypes[], void* recvbuf, const MPI_Count recvcounts[], const
        MPI_Aint rdispls[], const MPI_Datatype recvtypes[], MPI_Comm
        comm)

    int MPI_Ialltoallw(const void* sendbuf, const int sendcounts[],
        const int sdispls[], const MPI_Datatype sendtypes[], void*
        recvbuf, const int recvcounts[], const int rdispls[], const
        MPI_Datatype recvtypes[], MPI_Comm comm, MPI_Request* request)

    int MPI_Ialltoallw_c(const void* sendbuf, const MPI_Count
        sendcounts[], const MPI_Aint sdispls[], const MPI_Datatype
        sendtypes[], void* recvbuf, const MPI_Count recvcounts[], const
        MPI_Aint rdispls[], const MPI_Datatype recvtypes[], MPI_Comm
        comm, MPI_Request* request)

    int MPI_Alltoallw_init(const void* sendbuf, const int sendcounts[],
        const int sdispls[], const MPI_Datatype sendtypes[], void*
        recvbuf, const int recvcounts[], const int rdispls[], const
        MPI_Datatype recvtypes[], MPI_Comm comm, MPI_Info info,
        MPI_Request* request)

    int MPI_Alltoallw_init_c(const void* sendbuf, const MPI_Count
        sendcounts[], const MPI_Aint sdispls[], const MPI_Datatype
        sendtypes[], void* recvbuf, const MPI_Count recvcounts[], const
        MPI_Aint rdispls[], const MPI_Datatype recvtypes[], MPI_Comm
        comm, MPI_Info info, MPI_Request* request)

Fortran Syntax
^^^^^^^^^^^^^^

.. code-block:: fortran

    USE MPI
    ! or the older form: INCLUDE 'mpif.h'
    MPI_ALLTOALLW(SENDBUF, SENDCOUNTS, SDISPLS, SENDTYPES, RECVBUF, RECVCOUNTS, RDISPLS, RECVTYPES, COMM, IERROR)
    	<type> SENDBUF(*), RECVBUF(*)
    	INTEGER SENDCOUNTS(*), SDISPLS(*), SENDTYPES(*), RECVCOUNTS(*), RDISPLS(*), RECVTYPES(*), COMM, IERROR

    MPI_IALLTOALLW(SENDBUF, SENDCOUNTS, SDISPLS, SENDTYPES, RECVBUF, RECVCOUNTS, RDISPLS, RECVTYPES, COMM, REQUEST, IERROR)
    	<type> SENDBUF(*), RECVBUF(*)
    	INTEGER SENDCOUNTS(*), SDISPLS(*), SENDTYPES(*), RECVCOUNTS(*), RDISPLS(*), RECVTYPES(*), COMM, REQUEST, IERROR

    MPI_ALLTOALLW_INIT(SENDBUF, SENDCOUNTS, SDISPLS, SENDTYPES, RECVBUF, RECVCOUNTS, RDISPLS, RECVTYPES, COMM, INFO, REQUEST, IERROR)
    	<type> SENDBUF(*), RECVBUF(*)
    	INTEGER SENDCOUNTS(*), SDISPLS(*), SENDTYPES(*), RECVCOUNTS(*), RDISPLS(*), RECVTYPES(*), COMM, INFO, REQUEST, IERROR

Fortran 2008 Syntax
^^^^^^^^^^^^^^^^^^^

.. code-block:: fortran

    USE mpi_f08
    MPI_Alltoallw(sendbuf, sendcounts, sdispls, sendtypes, recvbuf, recvcounts, rdispls, recvtypes, comm, ierror)
    	TYPE(*), DIMENSION(..), INTENT(IN) :: sendbuf
    	INTEGER, INTENT(IN) :: sendcounts(*), sdispls(*), recvcounts(*), rdispls(*)
    	TYPE(MPI_Datatype), INTENT(IN) :: sendtypes(*), recvtypes(*)
    	TYPE(*), DIMENSION(..) :: recvbuf
    	TYPE(MPI_Comm), INTENT(IN) :: comm
    	INTEGER, OPTIONAL, INTENT(OUT) :: ierror

    MPI_Alltoallw(sendbuf, sendcounts, sdispls, sendtypes, recvbuf, recvcounts, rdispls, recvtypes, comm, ierror)
    	TYPE(*), DIMENSION(..), INTENT(IN) :: sendbuf
    	INTEGER(KIND=MPI_COUNT_KIND), INTENT(IN) :: sendcounts(*), recvcounts(*)
    	INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(IN) :: sdispls(*), rdispls(*)
    	TYPE(MPI_Datatype), INTENT(IN) :: sendtypes(*), recvtypes(*)
    	TYPE(*), DIMENSION(..) :: recvbuf
    	TYPE(MPI_Comm), INTENT(IN) :: comm
    	INTEGER, OPTIONAL, INTENT(OUT) :: ierror

    MPI_Ialltoallw(sendbuf, sendcounts, sdispls, sendtypes, recvbuf, recvcounts, rdispls, recvtypes, comm, request, ierror)
    	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf
    	INTEGER, INTENT(IN), ASYNCHRONOUS :: sendcounts(*), sdispls(*), recvcounts(*), rdispls(*)
    	TYPE(MPI_Datatype), INTENT(IN), ASYNCHRONOUS :: sendtypes(*), recvtypes(*)
    	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf
    	TYPE(MPI_Comm), INTENT(IN) :: comm
    	TYPE(MPI_Request), INTENT(OUT) :: request
    	INTEGER, OPTIONAL, INTENT(OUT) :: ierror

    MPI_Ialltoallw(sendbuf, sendcounts, sdispls, sendtypes, recvbuf, recvcounts, rdispls, recvtypes, comm, request, ierror)
    	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf
    	INTEGER(KIND=MPI_COUNT_KIND), INTENT(IN), ASYNCHRONOUS :: sendcounts(*), recvcounts(*)
    	INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(IN), ASYNCHRONOUS :: sdispls(*), rdispls(*)
    	TYPE(MPI_Datatype), INTENT(IN), ASYNCHRONOUS :: sendtypes(*), recvtypes(*)
    	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf
    	TYPE(MPI_Comm), INTENT(IN) :: comm
    	TYPE(MPI_Request), INTENT(OUT) :: request
    	INTEGER, OPTIONAL, INTENT(OUT) :: ierror

    MPI_Alltoallw_init(sendbuf, sendcounts, sdispls, sendtypes, recvbuf, recvcounts, rdispls, recvtypes, comm, info, request, ierror)
    	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf
    	INTEGER, INTENT(IN), ASYNCHRONOUS :: sendcounts(*), sdispls(*), recvcounts(*), rdispls(*)
    	TYPE(MPI_Datatype), INTENT(IN), ASYNCHRONOUS :: sendtypes(*), recvtypes(*)
    	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf
    	TYPE(MPI_Comm), INTENT(IN) :: comm
    	TYPE(MPI_Info), INTENT(IN) :: info
    	TYPE(MPI_Request), INTENT(OUT) :: request
    	INTEGER, OPTIONAL, INTENT(OUT) :: ierror

    MPI_Alltoallw_init(sendbuf, sendcounts, sdispls, sendtypes, recvbuf, recvcounts, rdispls, recvtypes, comm, info, request, ierror)
    	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf
    	INTEGER(KIND=MPI_COUNT_KIND), INTENT(IN), ASYNCHRONOUS :: sendcounts(*), recvcounts(*)
    	INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(IN), ASYNCHRONOUS :: sdispls(*), rdispls(*)
    	TYPE(MPI_Datatype), INTENT(IN), ASYNCHRONOUS :: sendtypes(*), recvtypes(*)
    	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf
    	TYPE(MPI_Comm), INTENT(IN) :: comm
    	TYPE(MPI_Info), INTENT(IN) :: info
    	TYPE(MPI_Request), INTENT(OUT) :: request
    	INTEGER, OPTIONAL, INTENT(OUT) :: ierror
