private static BigInteger oldSlowFactorial(int n1, int n2) {
    assert n1 <= n2;
    if (IntMath.log2(n2, CEILING) * (n2 - n1) < Long.SIZE - 1) {
      // the result will definitely fit into a long
      long result = 1;
      for (int i = n1 + 1; i <= n2; i++) {
        result *= i;
      }
      return BigInteger.valueOf(result);
    }

    /*

            return SmbFile.ATTR_READONLY | SmbFile.ATTR_DIRECTORY;
        }

        @Override
        public long createTime() {
            return 0L;
        }

        @Override
        public long lastModified() {
            return 0L;
        }

        @Override
        public long length() {
            return 0L;
        }

        @Override
        public String toString() {

    /**
     * The archive stream factory.
     */
    @Resource
    protected ArchiveStreamFactory archiveStreamFactory;

    /**
     * The maximum content size.
     */
    protected long maxContentSize = -1;

    /**
     * Creates a new ZipExtractor instance.
     */
    public ZipExtractor() {
        super();
    }

    @Override

  private static final long[] positive = new long[ARRAY_SIZE];
  private static final long[] nonzero = new long[ARRAY_SIZE];
  private static final long[] longs = new long[ARRAY_SIZE];

  @BeforeExperiment
  void setUp() {
    for (int i = 0; i < ARRAY_SIZE; i++) {
      positive[i] = randomPositiveBigInteger(Long.SIZE - 2).longValue();
      nonzero[i] = randomNonZeroBigInteger(Long.SIZE - 2).longValue();

    protected long delayMillisAfterProcessing = 0L;

    /** Delay in milliseconds when no URL is in the queue */
    protected long delayMillisAtNoUrlInQueue = 500L;

    /** Delay in milliseconds before processing a URL */
    protected long delayMillisBeforeProcessing = 0L;

    /** Delay in milliseconds for waiting for new URLs */
    protected long delayMillisForWaitingNewUrl = 1000L;

    /**

    /** createdTime */
    protected Long createdTime;

    /** suggestWord */
    protected String suggestWord;

    /** targetLabel */
    protected String targetLabel;

    /** targetRole */
    protected String targetRole;

    /** updatedBy */
    protected String updatedBy;

    /** updatedTime */
    protected Long updatedTime;

    // [Referrers] *comment only

   * {@code long} value in little-endian order.
   *
   * @throws IllegalStateException if {@code bits() < 64}
   */
  public abstract long asLong();

  /**
   * If this hashcode has enough bits, returns {@code asLong()}, otherwise returns a {@code long}
   * value with {@code asBytes()} as the least-significant bytes and {@code 0x00} as the remaining

   * @param start the starting bytes encoded as a long as big-endian
   * @param lim the limit of bytes to process encoded as a long as big-endian, or -1 to mean the max
   *     limit for numBytes
   */
  @GwtIncompatible // java.nio.charset.Charset
  private static void testBytes(int numBytes, long expectedCount, long start, long lim) {
    byte[] bytes = new byte[numBytes];
    if (lim == -1) {

      return NeverScheduledFuture.create();
    }

    private static final class NeverScheduledFuture<V> extends AbstractFuture<V>
        implements ListenableScheduledFuture<V> {

      static <V> NeverScheduledFuture<V> create() {
        return new NeverScheduledFuture<>();
      }

      @Override
      public long getDelay(TimeUnit unit) {

 */
@NullUnmarked
public class SipHashFunctionTest extends TestCase {

  // From https://131002.net/siphash/siphash24.c
  // k = 00 01 02 ...
  private static final long K0 = 0x0706050403020100L;
  private static final long K1 = 0x0f0e0d0c0b0a0908L;
  private static final HashFunction SIP_WITH_KEY = Hashing.sipHash24(K0, K1);
  private static final HashFunction SIP_WITHOUT_KEY = Hashing.sipHash24();