*/
  public static double meanOf(Iterator<? extends Number> values) {
    checkArgument(values.hasNext());
    long count = 1;
    double mean = values.next().doubleValue();
    while (values.hasNext()) {
      double value = values.next().doubleValue();
      count++;
      if (isFinite(value) && isFinite(mean)) {
        // Art of Computer Programming vol. 2, Knuth, 4.2.2, (15)
        mean += (value - mean) / count;

    for (Number value : values) {
      add(value.doubleValue());
    }
  }

  /**
   * Adds the given values to the dataset.
   *
   * @param values a series of values, which will be converted to {@code double} values (this may
   *     cause loss of precision)
   */
  public void addAll(Iterator<? extends Number> values) {
    while (values.hasNext()) {
      add(values.next().doubleValue());
    }
  }

  /**

    for (int i = 0, n = 0; n <= DoubleMath.MAX_FACTORIAL; i++, n += 16) {
      assertThat(DoubleMath.everySixteenthFactorial[i])
          .isEqualTo(BigIntegerMath.factorial(n).doubleValue());
    }
  }

  @GwtIncompatible // DoubleMath.roundToInt(double, RoundingMode)
  public void testRoundIntegralDoubleToInt() {
    for (double d : INTEGRAL_DOUBLE_CANDIDATES) {

   * Returns the value of this {@code UnsignedInteger} as a {@code float}, analogous to a widening
   * primitive conversion from {@code int} to {@code double}, and correctly rounded.
   */
  @Override
  public double doubleValue() {
    return longValue();
  }

  /** Returns the value of this {@code UnsignedInteger} as a {@link BigInteger}. */
  public BigInteger bigIntegerValue() {
    return BigInteger.valueOf(longValue());
  }

   * Returns the value of this {@code UnsignedInteger} as a {@code float}, analogous to a widening
   * primitive conversion from {@code int} to {@code double}, and correctly rounded.
   */
  @Override
  public double doubleValue() {
    return longValue();
  }

  /** Returns the value of this {@code UnsignedInteger} as a {@link BigInteger}. */
  public BigInteger bigIntegerValue() {
    return BigInteger.valueOf(longValue());
  }

        } else if (value instanceof Long || value instanceof Integer) {
            buf.append(((Number) value).longValue());
        } else if (value instanceof Number) {
            buf.append(((Number) value).doubleValue());
        } else {
            buf.append('"').append(StringEscapeUtils.escapeJson(value.toString())).append('"');
        }
        return buf;
    }

    reverse(array, fromIndex, toIndex);
  }

  /**
   * Returns an array containing each value of {@code collection}, converted to a {@code double}
   * value in the manner of {@link Number#doubleValue}.
   *
   * <p>Elements are copied from the argument collection as if by {@code collection.toArray()}.
   * Calling this method is as thread-safe as calling that method.
   *

    reverse(array, fromIndex, toIndex);
  }

  /**
   * Returns an array containing each value of {@code collection}, converted to a {@code double}
   * value in the manner of {@link Number#doubleValue}.
   *
   * <p>Elements are copied from the argument collection as if by {@code collection.toArray()}.
   * Calling this method is as thread-safe as calling that method.
   *

    assertSame(a, numberOrdering.min(a, b));
  }

  private static class NumberOrdering extends Ordering<Number> {
    @Override
    public int compare(Number a, Number b) {
      return ((Double) a.doubleValue()).compareTo(b.doubleValue());
    }

    @Override
    public int hashCode() {
      return NumberOrdering.class.hashCode();
    }

    @Override
    public boolean equals(@Nullable Object other) {

    assertSame(a, numberOrdering.min(a, b));
  }

  private static class NumberOrdering extends Ordering<Number> {
    @Override
    public int compare(Number a, Number b) {
      return ((Double) a.doubleValue()).compareTo(b.doubleValue());
    }

    @Override
    public int hashCode() {
      return NumberOrdering.class.hashCode();
    }

    @Override
    public boolean equals(@Nullable Object other) {