*/
  public static double roundToDouble(BigDecimal x, RoundingMode mode) {
    return BigDecimalToDoubleRounder.INSTANCE.roundToDouble(x, mode);
  }

  private static class BigDecimalToDoubleRounder extends ToDoubleRounder<BigDecimal> {
    static final BigDecimalToDoubleRounder INSTANCE = new BigDecimalToDoubleRounder();

    private BigDecimalToDoubleRounder() {}

    @Override
    double roundToDoubleArbitrarily(BigDecimal bigDecimal) {

   */
  public static double roundToDouble(BigDecimal x, RoundingMode mode) {
    return BigDecimalToDoubleRounder.INSTANCE.roundToDouble(x, mode);
  }

  private static class BigDecimalToDoubleRounder extends ToDoubleRounder<BigDecimal> {
    static final BigDecimalToDoubleRounder INSTANCE = new BigDecimalToDoubleRounder();

    private BigDecimalToDoubleRounder() {}

    @Override
    double roundToDoubleArbitrarily(BigDecimal bigDecimal) {