private static final byte GREATEST = Byte.MAX_VALUE;

  private static final byte[] VALUES = {LEAST, -1, 0, 1, GREATEST};

  public void testCheckedCast() {
    for (byte value : VALUES) {
      assertThat(SignedBytes.checkedCast((long) value)).isEqualTo(value);
    }
    assertCastFails(GREATEST + 1L);
    assertCastFails(LEAST - 1L);
    assertCastFails(Long.MAX_VALUE);
    assertCastFails(Long.MIN_VALUE);
  }

    assertThat(UnsignedBytes.toInt((byte) -1)).isEqualTo(255);
  }

  public void testCheckedCast() {
    for (byte value : VALUES) {
      assertThat(UnsignedBytes.checkedCast(UnsignedBytes.toInt(value))).isEqualTo(value);
    }
    assertCastFails(256L);
    assertCastFails(-1L);
    assertCastFails(Long.MAX_VALUE);
    assertCastFails(Long.MIN_VALUE);
  }

    for (long value : UNSIGNED_INTS) {
      assertThat(UnsignedInts.toLong(UnsignedInts.checkedCast(value))).isEqualTo(value);
    }
    assertCastFails(1L << 32);
    assertCastFails(-1L);
    assertCastFails(Long.MAX_VALUE);
    assertCastFails(Long.MIN_VALUE);
  }

  private static void assertCastFails(long value) {
    try {
      UnsignedInts.checkedCast(value);
      fail("Cast to int should have failed: " + value);

  @BeforeExperiment
  void setUp() {
    // random integers will be generated in this range, then raised to the
    // power of (1/concentration) and floor()ed
    max = Ints.checkedCast((long) Math.pow(distinctKeys, concentration));

    cache =
        CacheBuilder.newBuilder()
            .concurrencyLevel(segments)
            .maximumSize(maximumSize)
            .build(

    for (long value : UNSIGNED_INTS) {
      assertThat(UnsignedInts.toLong(UnsignedInts.checkedCast(value))).isEqualTo(value);
    }
    assertCastFails(1L << 32);
    assertCastFails(-1L);
    assertCastFails(Long.MAX_VALUE);
    assertCastFails(Long.MIN_VALUE);
  }

  private static void assertCastFails(long value) {
    try {
      UnsignedInts.checkedCast(value);
      fail("Cast to int should have failed: " + value);

   * @return the {@code byte} value that, when treated as unsigned, equals {@code value}
   * @throws IllegalArgumentException if {@code value} is negative or greater than 255
   */
  @CanIgnoreReturnValue
  public static byte checkedCast(long value) {
    checkArgument(value >> Byte.SIZE == 0, "out of range: %s", value);
    return (byte) value;
  }

  /**
   * Returns the {@code byte} value that, when treated as unsigned, is nearest in value to {@code

  private static final byte GREATEST = Byte.MAX_VALUE;

  private static final byte[] VALUES = {LEAST, -1, 0, 1, GREATEST};

  public void testCheckedCast() {
    for (byte value : VALUES) {
      assertThat(SignedBytes.checkedCast((long) value)).isEqualTo(value);
    }
    assertCastFails(GREATEST + 1L);
    assertCastFails(LEAST - 1L);
    assertCastFails(Long.MAX_VALUE);
    assertCastFails(Long.MIN_VALUE);
  }

      int i = value;
      return (i == Integer.MIN_VALUE) ? null : i - 1;
    }

    @Override
    Integer offset(Integer origin, long distance) {
      checkNonnegative(distance, "distance");
      return Ints.checkedCast(origin.longValue() + distance);
    }

    @Override
    public long distance(Integer start, Integer end) {
      return (long) end - start;
    }

    @Override
    public Integer minValue() {

  @BeforeExperiment
  void setUp() {
    // random integers will be generated in this range, then raised to the
    // power of (1/concentration) and floor()ed
    max = Ints.checkedCast((long) Math.pow(distinctKeys, concentration));

    cache =
        CacheBuilder.newBuilder()
            .concurrencyLevel(segments)
            .maximumSize(maximumSize)
            .build(

    assertThat(UnsignedBytes.toInt((byte) -1)).isEqualTo(255);
  }

  public void testCheckedCast() {
    for (byte value : VALUES) {
      assertThat(UnsignedBytes.checkedCast(UnsignedBytes.toInt(value))).isEqualTo(value);
    }
    assertCastFails(256L);
    assertCastFails(-1L);
    assertCastFails(Long.MAX_VALUE);
    assertCastFails(Long.MIN_VALUE);
  }