@Override
    protected List<Double> create(Double[] elements) {
      return asList(elements);
    }
  }

  public static final class DoublesAsListHeadSubListGenerator extends TestDoubleListGenerator {
    @Override
    protected List<Double> create(Double[] elements) {
      Double[] suffix = {Double.MIN_VALUE, Double.MAX_VALUE};
      Double[] all = concat(elements, suffix);

    }

    private static Double toDouble(final String s) {
        if (StringUtil.isEmpty(s)) {
            return null;
        }
        return Double.valueOf(DecimalFormatUtil.normalize(s));
    }

    /**
     * Converts to {@literal double}.
     *
     * @param o
     *            The object to convert
     * @return The converted {@literal double}
     */
    public static double toPrimitiveDouble(final Object o) {

    return new ImmutableDoubleArray(new double[] {e0, e1, e2, e3});
  }

  /** Returns an immutable array containing the given values, in order. */
  public static ImmutableDoubleArray of(double e0, double e1, double e2, double e3, double e4) {
    return new ImmutableDoubleArray(new double[] {e0, e1, e2, e3, e4});
  }

        scale);
  }

  private static double[] longsToDoubles(long[] longs) {
    int len = longs.length;
    double[] doubles = new double[len];
    for (int i = 0; i < len; i++) {
      doubles[i] = longs[i];
    }
    return doubles;
  }

  private static double[] intsToDoubles(int[] ints) {
    int len = ints.length;
    double[] doubles = new double[len];
    for (int i = 0; i < len; i++) {

        .setExpectation(Double.POSITIVE_INFINITY, UP, CEILING)
        .roundUnnecessaryShouldThrow()
        .test();
  }

  public void testRoundToDouble_wayTooBig() {
    BigDecimal bi = BigDecimal.valueOf(2).pow(2 * Double.MAX_EXPONENT);
    new RoundToDoubleTester(bi)
        .setExpectation(Double.MAX_VALUE, DOWN, FLOOR, HALF_EVEN, HALF_UP, HALF_DOWN)

          Doubles.asList(
              -Double.MIN_VALUE,
              -Double.MIN_NORMAL,
              -1,
              -20,
              Double.NaN,
              Double.NEGATIVE_INFINITY,
              -0.001));

  public void testFuzzyEqualsFinite() {
    for (double a : FINITE_DOUBLE_CANDIDATES) {
      for (double b : FINITE_DOUBLE_CANDIDATES) {

   * contains both {@link Double#POSITIVE_INFINITY} and {@link Double#NEGATIVE_INFINITY} then the
   * result is {@link Double#NaN}. If it contains {@link Double#POSITIVE_INFINITY} and finite values
   * only or {@link Double#POSITIVE_INFINITY} only, the result is {@link Double#POSITIVE_INFINITY}.
   * If it contains {@link Double#NEGATIVE_INFINITY} and finite values only or {@link
   * Double#NEGATIVE_INFINITY} only, the result is {@link Double#NEGATIVE_INFINITY}.

   */
  abstract double singleQuantile(int index, int scale, double[] dataset);

  /**
   * Calculates multiple quantiles. Equivalent to {@code
   * Quantiles.scale(scale).indexes(indexes).computeInPlace(dataset)}.
   */
  abstract Map<Integer, Double> multipleQuantiles(
      Collection<Integer> indexes, int scale, double[] dataset);

  static double getMinValue(double[] array, int from) {

  }

  public void testMappingAnd_samePointTwice() {
    double x = 1.2;
    double y = 3.4;
    assertThrows(
        IllegalArgumentException.class, () -> LinearTransformation.mapping(x, y).and(x, y));
  }

  public void testMappingWithSlope_regular() {
    double x1 = 1.2;
    double y1 = 3.4;
    double xDelta = -5.6;
    double slope = -7.8;

  }

  public void testMappingAnd_samePointTwice() {
    double x = 1.2;
    double y = 3.4;
    assertThrows(
        IllegalArgumentException.class, () -> LinearTransformation.mapping(x, y).and(x, y));
  }

  public void testMappingWithSlope_regular() {
    double x1 = 1.2;
    double y1 = 3.4;
    double xDelta = -5.6;
    double slope = -7.8;