} else if f.begin > 1 {
				f.begin = 1
			}
		} else {
			// Find gap from predecessor and divide between predecessor and f.
			halfGap := (f.begin - funcs[i-1].end) / 2
			if halfGap > expand {
				halfGap = expand
			}
			funcs[i-1].end += halfGap
			f.begin -= halfGap
		}
		funcs[i] = f
	}

	// Also extend the ending point of the last function.
	if len(funcs) > 0 {

    // the representable doubles are 2^53 and 2^53 + 2.
    // 2^53+1 is halfway between, so HALF_UP will go up and HALF_DOWN will go down.
    new RoundToDoubleTester(BigDecimal.valueOf((1L << 53) + 1))
        .setExpectation(twoToThe53, DOWN, FLOOR, HALF_DOWN, HALF_EVEN)
        .setExpectation(Math.nextUp(twoToThe53), CEILING, UP, HALF_UP)
        .roundUnnecessaryShouldThrow()
        .test();
  }

    // the representable doubles are 2^53 and 2^53 + 2.
    // 2^53+1 is halfway between, so HALF_UP will go up and HALF_DOWN will go down.
    new RoundToDoubleTester(BigInteger.valueOf((1L << 53) + 1))
        .setExpectation(twoToThe53, DOWN, FLOOR, HALF_DOWN, HALF_EVEN)
        .setExpectation(Math.nextUp(twoToThe53), CEILING, UP, HALF_UP)
        .roundUnnecessaryShouldThrow()
        .test();
  }

    double roundArbitrarily = roundToDoubleArbitrarily(x);
    if (Double.isInfinite(roundArbitrarily)) {
      switch (mode) {
        case DOWN:
        case HALF_EVEN:
        case HALF_DOWN:
        case HALF_UP:
          return Double.MAX_VALUE * sign(x);
        case FLOOR:
          return (roundArbitrarily == Double.POSITIVE_INFINITY)
              ? Double.MAX_VALUE
              : Double.NEGATIVE_INFINITY;

    double roundArbitrarily = roundToDoubleArbitrarily(x);
    if (Double.isInfinite(roundArbitrarily)) {
      switch (mode) {
        case DOWN:
        case HALF_EVEN:
        case HALF_DOWN:
        case HALF_UP:
          return Double.MAX_VALUE * sign(x);
        case FLOOR:
          return (roundArbitrarily == Double.POSITIVE_INFINITY)
              ? Double.MAX_VALUE
              : Double.NEGATIVE_INFINITY;

    static String toBytes(Amount<DataAmount> bytes) {
        return bytes.toUnits(DataAmount.BYTES).value.setScale(3, RoundingMode.HALF_UP).stripTrailingZeros().toString() + " B"
    }

    static String toMillis(Amount<Duration> duration) {
        return duration.toUnits(Duration.MILLI_SECONDS).value.setScale(3, RoundingMode.HALF_UP).stripTrailingZeros().toString() + " ms"
    }

    static <Q> Number percentChange(Amount<Q> current, Amount<Q> previous) {

	if haveArchRemainder {
		return archRemainder(x, y)
	}
	return remainder(x, y)
}

func remainder(x, y float64) float64 {
	const (
		Tiny    = 4.45014771701440276618e-308 // 0x0020000000000000
		HalfMax = MaxFloat64 / 2
	)
	// special cases
	switch {
	case IsNaN(x) || IsNaN(y) || IsInf(x, 0) || y == 0:
		return NaN()
	case IsInf(y, 0):
		return x
	}
	sign := false
	if x < 0 {
		x = -x

      case HALF_DOWN:
      case HALF_UP:
        long absRem = abs(rem);
        long cmpRemToHalfDivisor = absRem - (abs(q) - absRem);
        // subtracting two nonnegative longs can't overflow
        // cmpRemToHalfDivisor has the same sign as compare(abs(rem), abs(q) / 2).
        if (cmpRemToHalfDivisor == 0) { // exactly on the half mark
          increment = (mode == HALF_UP || (mode == HALF_EVEN && (div & 1) != 0));

        double sign = Math.signum(getDifferencePercentage(baseline, current).doubleValue());
        return new BigDecimal(sign * 100.0 * confidenceInDifference(baseline.getTotalTime(), current.getTotalTime())).setScale(2, RoundingMode.HALF_UP);
    }

    public static Number getDifferencePercentage(MeasuredOperationList baseline, MeasuredOperationList current) {
        if (baseline.isEmpty() || current.isEmpty()) {

   * mode}.
   *
   * <p>For the case of {@link RoundingMode#HALF_DOWN}, {@code HALF_UP}, and {@code HALF_EVEN},
   * infinite {@code double} values are considered infinitely far away. For example, 2^2000 is not
   * representable as a double, but {@code roundToDouble(BigDecimal.valueOf(2).pow(2000), HALF_UP)}
   * will return {@code Double.MAX_VALUE}, not {@code Double.POSITIVE_INFINITY}.
   *