/*D
   MPIX_Stream_isend - Start a nonblocking send from a specific local stream to a specific remote stream

Synopsis:
.vb
int MPIX_Stream_isend(const void *buf, int count, MPI_Datatype datatype,
                      int dest, int tag, MPI_Comm comm, int source_stream_index,
                      int dest_stream_index, MPI_Request *request)
.ve
.vb
int MPIX_Stream_isend_c(const void *buf, MPI_Count count, MPI_Datatype datatype,
                        int dest, int tag, MPI_Comm comm,
                        int source_stream_index, int dest_stream_index,
                        MPI_Request *request)
.ve

Input Parameters:
+ buf - initial address of send buffer (choice)
. count - number of elements in send buffer (non-negative integer)
. datatype - datatype of each send buffer element (handle)
. dest - rank of destination (integer)
. tag - message tag (integer)
. comm - communicator (handle)
. source_stream_index - source_stream_index (integer)
- dest_stream_index - dest_stream_index (integer)

Output Parameters:
. request - communication request (handle)

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_BUFFER
.N MPI_ERR_COMM
.N MPI_ERR_COUNT
.N MPI_ERR_RANK
.N MPI_ERR_TAG
.N MPI_ERR_TYPE
.N MPI_ERR_OTHER

D*/

