rocksdb_sys::rocksdb_approximate_sizes

pub unsafe extern fn rocksdb_approximate_sizes(db: *mut rocksdb_t, num_ranges: c_int, range_start_key: *const *const c_char, range_start_key_len: *const size_t, range_limit_key: *const *const c_char, range_limit_key_len: *const size_t, sizes: *mut uint64_t)