CHECK_BUFFER(1, sendbuf, sendcount, sendtype)
CHECK_BUFFER(6, recvbuf, recvcount, recvtype)
CHECK_ARGS(sendbuf == recvbuf && sendcount > 0 && recvcount > 0, MPI_ERR_BUFFER,
CHECK_BUFFER(1, sendbuf, sendcount, sendtype)
CHECK_BUFFER(6, recvbuf, recvcount, recvtype)
CHECK_ARGS(sendbuf == recvbuf && sendcount > 0 && recvcount > 0, MPI_ERR_BUFFER,