Function mpi::ffi::MPI_Win_allocate_shared

pub unsafe extern fn MPI_Win_allocate_shared(size: MPI_Aint,
                                             disp_unit: c_int,
                                             info: MPI_Info,
                                             comm: MPI_Comm,
                                             baseptr: *mut c_void,
                                             win: *mut MPI_Win)
                                             -> c_int