Function rocks_sys::rocks_db_merge

pub unsafe extern "C" fn rocks_db_merge(
    db: *mut rocks_db_t, 
    options: *const rocks_writeoptions_t, 
    key: *const c_char, 
    keylen: usize, 
    val: *const c_char, 
    vallen: usize, 
    status: *mut *mut rocks_status_t
)