}

  /**
   * Reads a {@code long} as specified by {@link DataInputStream#readLong()}, except using
   * little-endian byte order.
   *
   * @return the next eight bytes of the input stream, interpreted as a {@code long} in
   *     little-endian byte order
   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue // to skip some bytes
  @Override
  public long readLong() throws IOException {

     * Parameterised test of capacity values, including edge cases such as
     * zero and negative capacities.
     */
    @ParameterizedTest
    @ValueSource(longs = { 0L, -1L, Long.MAX_VALUE })
    @DisplayName("capacity may be any long value")
    void testCapacityEdgeValues(long capacity) {
        when(mockAllocInfo.getCapacity()).thenReturn(capacity);
        assertEquals(capacity, mockAllocInfo.getCapacity());
    }

    /**

 */
@GwtCompatible
final class Hashing {
  private Hashing() {}

  /*
   * These should be ints, but we need to use longs to force GWT to do the multiplications with
   * enough precision.
   */
  private static final long C1 = 0xcc9e2d51;
  private static final long C2 = 0x1b873593;

  /*
   * This method was rewritten in Java from an intermediate step of the Murmur hash function in

            + Long.numberOfLeadingZeros(~a)
            + Long.numberOfLeadingZeros(b)
            + Long.numberOfLeadingZeros(~b);
    if (leadingZeros > Long.SIZE + 1) {
      return a * b;
    }
    // the return value if we will overflow (which we calculate by overflowing a long :) )
    long limit = Long.MAX_VALUE + ((a ^ b) >>> (Long.SIZE - 1));
    if (leadingZeros < Long.SIZE | (a < 0 & b == Long.MIN_VALUE)) {

    assertThat(dataset)
        .usingExactEquality()
        .containsExactlyElementsIn(SIXTEEN_SQUARES_DOUBLES)
        .inOrder();
  }

  public void testScale_index_compute_longVarargs() {
    long[] dataset = Longs.toArray(SIXTEEN_SQUARES_LONGS);
    assertThat(Quantiles.scale(10).index(1).compute(dataset))
        .isWithin(ALLOWED_ERROR)
        .of(SIXTEEN_SQUARES_DECILE_1);

    assertThat(dataset)
        .usingExactEquality()
        .containsExactlyElementsIn(SIXTEEN_SQUARES_DOUBLES)
        .inOrder();
  }

  public void testScale_index_compute_longVarargs() {
    long[] dataset = Longs.toArray(SIXTEEN_SQUARES_LONGS);
    assertThat(Quantiles.scale(10).index(1).compute(dataset))
        .isWithin(ALLOWED_ERROR)
        .of(SIXTEEN_SQUARES_DECILE_1);

        .isNull();
    assertWithMessage("Max long").that(Ints.tryParse(Long.toString(Long.MAX_VALUE))).isNull();
    assertWithMessage("Min long").that(Ints.tryParse(Long.toString(Long.MIN_VALUE))).isNull();
    assertThat(Ints.tryParse("\u0662\u06f3")).isNull();
  }

  /**
   * Applies {@link Ints#tryParse(String)} to the given string and asserts that the result is as
   * expected.

    scratch.putInt(i);
    return update(scratch, Ints.BYTES);
  }

  @Override
  @CanIgnoreReturnValue
  public Hasher putLong(long l) {
    ByteBuffer scratch = scratch();
    scratch.putLong(l);
    return update(scratch, Longs.BYTES);
  }

  @Override
  @CanIgnoreReturnValue
  public Hasher putChar(char c) {
    ByteBuffer scratch = scratch();
    scratch.putChar(c);

    }
  }

  /**
   * Returns a funnel for longs.
   *
   * @since 13.0
   */
  public static Funnel<Long> longFunnel() {
    return LongFunnel.INSTANCE;
  }

  private enum LongFunnel implements Funnel<Long> {
    INSTANCE;

    @Override
    public void funnel(Long from, PrimitiveSink into) {
      into.putLong(from);
    }

    @Override

    }
  }

  /**
   * Returns a funnel for longs.
   *
   * @since 13.0
   */
  public static Funnel<Long> longFunnel() {
    return LongFunnel.INSTANCE;
  }

  private enum LongFunnel implements Funnel<Long> {
    INSTANCE;

    @Override
    public void funnel(Long from, PrimitiveSink into) {
      into.putLong(from);
    }

    @Override