public static final class ImmutableDoubleArrayHeadSubListAsListGenerator
      extends TestDoubleListGenerator {
    @Override
    protected List<Double> create(Double[] elements) {
      Double[] suffix = {Double.MIN_VALUE, Double.MAX_VALUE};
      Double[] all = concat(elements, suffix);
      return makeArray(all).subArray(0, elements.length).asList();
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // used only from suite

        0.1,
        0.5,
        1.0,
        Double.MAX_VALUE,
        GREATEST,
        Double.MIN_NORMAL,
        -Double.MIN_NORMAL,
        Double.MIN_VALUE,
        -Double.MIN_VALUE,
        Integer.MIN_VALUE,
        Integer.MAX_VALUE,
        Long.MIN_VALUE,
        Long.MAX_VALUE
      };

  private static final double[] VALUES = Doubles.concat(NUMBERS, new double[] {NaN});

        // Valid inputs: each known code must map to its documented message
        assertEquals(expectedMessage, lookupMessage(code).orElse(null));
    }

    @ParameterizedTest
    @ValueSource(ints = { -1, Integer.MIN_VALUE, Integer.MAX_VALUE })
    @DisplayName("Unknown codes: lookup returns empty Optional")
    void lookup_returns_empty_for_unknown_codes(int unknownCode) {
        // Invalid inputs: codes not present should yield no message

    checkState(ySumOfSquaresOfDeltas > 0.0);
    // The product of two positive numbers can be zero if the multiplication underflowed. We
    // force a positive value by effectively rounding up to MIN_VALUE.
    double productOfSumsOfSquaresOfDeltas =
        ensurePositive(xSumOfSquaresOfDeltas * ySumOfSquaresOfDeltas);
    return ensureInUnitRange(sumOfProductsOfDeltas / Math.sqrt(productOfSumsOfSquaresOfDeltas));
  }

    }

    public Ansi scrollUp(final int rows) {
        if (rows == Integer.MIN_VALUE) {
            return scrollDown(Integer.MAX_VALUE);
        }
        return rows > 0 ? appendEscapeSequence('S', rows) : rows < 0 ? scrollDown(-rows) : this;
    }

    public Ansi scrollDown(final int rows) {
        if (rows == Integer.MIN_VALUE) {
            return scrollUp(Integer.MAX_VALUE);
        }

        -0f,
        0f,
        1f,
        Float.MAX_VALUE,
        GREATEST,
        Float.MIN_NORMAL,
        -Float.MIN_NORMAL,
        Float.MIN_VALUE,
        -Float.MIN_VALUE,
        Integer.MIN_VALUE,
        Integer.MAX_VALUE,
        Long.MIN_VALUE,
        Long.MAX_VALUE
      };

  private static final float[] VALUES = Floats.concat(NUMBERS, new float[] {NaN});

  private static final int[] EMPTY = {};
  private static final int[] ARRAY1 = {(int) 1};
  private static final int[] ARRAY234 = {(int) 2, (int) 3, (int) 4};

  private static final int LEAST = Integer.MIN_VALUE;
  private static final int GREATEST = Integer.MAX_VALUE;

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

  // We need to test that our method behaves like the JDK method.

        -0f,
        0f,
        1f,
        Float.MAX_VALUE,
        GREATEST,
        Float.MIN_NORMAL,
        -Float.MIN_NORMAL,
        Float.MIN_VALUE,
        -Float.MIN_VALUE,
        Integer.MIN_VALUE,
        Integer.MAX_VALUE,
        Long.MIN_VALUE,
        Long.MAX_VALUE
      };

  private static final float[] VALUES = Floats.concat(NUMBERS, new float[] {NaN});

                Arguments.of((LongGetter) FileEntry::lastAccess, 0L, "zero lastAccess"),
                Arguments.of((LongGetter) FileEntry::lastAccess, Long.MIN_VALUE, "min lastAccess"),

                Arguments.of((LongGetter) FileEntry::length, -100L, "negative length"),
                Arguments.of((LongGetter) FileEntry::length, 0L, "zero length"),

    checkState(ySumOfSquaresOfDeltas > 0.0);
    // The product of two positive numbers can be zero if the multiplication underflowed. We
    // force a positive value by effectively rounding up to MIN_VALUE.
    double productOfSumsOfSquaresOfDeltas =
        ensurePositive(xSumOfSquaresOfDeltas * ySumOfSquaresOfDeltas);
    return ensureInUnitRange(sumOfProductsOfDeltas / Math.sqrt(productOfSumsOfSquaresOfDeltas));
  }