Examples of java.math.BigDecimal.scale()

java.math.BigDecimal.scale()
Returns the scale of this {@code BigDecimal}. If zero or positive, the scale is the number of digits to the right of the decimal point. If negative, the unscaled value of the number is multiplied by ten to the power of the negation of the scale. For example, a scale of {@code -3} means the unscaledvalue is multiplied by 1000. @return the scale of this {@code BigDecimal}.

               Object value, boolean isSelected, boolean hasFocus, 
               int row, int column) {
            BigDecimal valueAddedTaxPercentage = ((CatalogPieceOfFurniture)value).getValueAddedTaxPercentage();
            if (valueAddedTaxPercentage != null) {
              NumberFormat percentInstance = DecimalFormat.getPercentInstance();
              percentInstance.setMinimumFractionDigits(valueAddedTaxPercentage.scale() - 2);
              value = percentInstance.format(valueAddedTaxPercentage);
            } else {
              value = "";
            }
            setHorizontalAlignment(JLabel.RIGHT);

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                        BigDecimal num = resultSet.getBigDecimal(index);
                        if (num == null) {
                            break;
                        }


                        if (num.scale() > 0) {
                            return new Double(num.doubleValue());
                        } else {
                            return new Long(num.longValue());
                        }

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    }
    
    private static class BigDecimalColumnSerializer extends ColumnSerializer {
        protected void writeObject(ObjectOutput out, Object obj) throws IOException {
            BigDecimal val = (BigDecimal)obj;
            out.writeInt(val.scale());
            BigInteger unscaled = val.unscaledValue();
            byte[] bytes = unscaled.toByteArray();
            out.writeInt(bytes.length);
            out.write(bytes);
        }

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   * @throws TransformationException if value is an incorrect input type or
   * the transformation fails
   */
  public Object transformDirect(Object value) throws TransformationException {
    BigDecimal result = BigDecimal.valueOf(((Number)value).doubleValue());
    result = result.setScale(Math.max(result.scale(), (value instanceof Double ? 16 : 8) - result.precision()));
    return result;
  }


  /**
   * Type of the incoming value.

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                    BigDecimal num = rs.getBigDecimal(columnNumber);
                    if (num == null) {
                        break;
                    }
                    if (num.scale() > 0) {
                        newprop.setFloatValue(num.doubleValue());
                    } else {
                        newprop.setIntegerValue(num.longValue());
                    }

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    return x.divide(y);
  }
  
  public static Object divide(BigDecimal x, BigDecimal y) {
    BigDecimal bd = x.divide(y, Math.max(16, x.scale() + y.precision() + 1), RoundingMode.HALF_UP).stripTrailingZeros();
    return bd.setScale(Math.max(x.scale(), bd.scale()));
  }


  // ================== Function = abs =====================


  public static int abs(int x) {

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            if (BigDecimal.ZERO.equals(x)) {
                writeByte((byte) DECIMAL_0_1);
            } else if (BigDecimal.ONE.equals(x)) {
                writeByte((byte) (DECIMAL_0_1 + 1));
            } else {
                int scale = x.scale();
                BigInteger b = x.unscaledValue();
                int bits = b.bitLength();
                if (bits <= 63) {
                    if (scale == 0) {
                        writeByte((byte) DECIMAL_SMALL_0);

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            if (BigDecimal.ZERO.equals(x)) {
                return 1;
            } else if (BigDecimal.ONE.equals(x)) {
                return 1;
            }
            int scale = x.scale();
            BigInteger b = x.unscaledValue();
            int bits = b.bitLength();
            if (bits <= 63) {
                if (scale == 0) {
                    return 1 + getVarLongLen(b.longValue());

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            throw DbException.get(ErrorCode.DIVISION_BY_ZERO_1, getSQL());
        }
        BigDecimal bd = value.divide(dec.value, value.scale() + DIVIDE_SCALE_ADD, BigDecimal.ROUND_HALF_DOWN);
        if (bd.signum() == 0) {
            bd = BigDecimal.ZERO;
        } else if (bd.scale() > 0) {
            if (!bd.unscaledValue().testBit(0)) {
                String s = bd.toString();
                int i = s.length() - 1;
                while (i >= 0 && s.charAt(i) == '0') {
                    i--;

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    MathContext mc = new MathContext(compPrec);
    BigDecimal v
        = new BigDecimal(value.unscaledValue(), scale, mc);


    BigDecimalLayout bdl
         = new BigDecimalLayout(v.unscaledValue(), v.scale(),
              BigDecimalLayoutForm.SCIENTIFIC);


    char[] mant = bdl.mantissa();


    // Add a decimal point if necessary.  The mantissa may not

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