Function mpi::ffi::MPI_Unpack_external

pub unsafe extern fn MPI_Unpack_external(datarep: *const c_char,
                                         inbuf: *const c_void,
                                         insize: MPI_Aint,
                                         position: *mut MPI_Aint,
                                         outbuf: *mut c_void,
                                         outcount: c_int,
                                         datatype: MPI_Datatype)
                                         -> c_int