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}.

        // TODO: no need to calculate every time.
        if (isZero()) {
            return 0;
        }
        BigDecimal val = value.abs().stripTrailingZeros();
        return val.precision() - val.scale();
    }


    @JRubyMethod(name = "sqrt", required = 1)
    public IRubyObject sqrt(IRubyObject arg) {
        Ruby runtime = getRuntime();

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        //                       new Object[] { "'" + content +"'"}));
        //}




        if ( isScaleDefined == true ) {
            if (d.scale() > fScale)
                throw new InvalidDatatypeValueException(
                                                        getErrorString(DatatypeMessageProvider.ScaleExceeded,
                                                                        DatatypeMessageProvider.MSG_NONE,
                                                                        new Object[] { content}));
        }

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                                                        getErrorString(DatatypeMessageProvider.ScaleExceeded,
                                                                        DatatypeMessageProvider.MSG_NONE,
                                                                        new Object[] { content}));
        }
        if ( isPrecisionDefined == true ) {
            int precision = d.movePointRight(d.scale()).toString().length() - 
                            ((d.signum() < 0) ? 1 : 0); // account for minus sign
            if (precision > fPrecision)
                throw new InvalidDatatypeValueException(
                                getErrorString(DatatypeMessageProvider.PrecisionExceeded,
                                 DatatypeMessageProvider.MSG_NONE,

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            bigDecimal = (BigDecimal) num;
        } else {
            bigDecimal = new BigDecimal(num.toString()).stripTrailingZeros();
        }


        int intLength = bigDecimal.precision() - bigDecimal.scale();
        if (integral >= intLength) {
            int factionLength = bigDecimal.scale() < 0 ? 0 : bigDecimal.scale();
            return fractional >= factionLength;
        } else {
            return false;

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            bigDecimal = new BigDecimal(num.toString()).stripTrailingZeros();
        }


        int intLength = bigDecimal.precision() - bigDecimal.scale();
        if (integral >= intLength) {
            int factionLength = bigDecimal.scale() < 0 ? 0 : bigDecimal.scale();
            return fractional >= factionLength;
        } else {
            return false;
        }
    }

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            bigDecimal = new BigDecimal(num.toString()).stripTrailingZeros();
        }


        int intLength = bigDecimal.precision() - bigDecimal.scale();
        if (integral >= intLength) {
            int factionLength = bigDecimal.scale() < 0 ? 0 : bigDecimal.scale();
            return fractional >= factionLength;
        } else {
            return false;
        }
    }

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            // older platforms.
            BigDecimal dec = new BigDecimal(Double.toString(d));


            // See how many trailing zeros we have after the decimal point.
            long unscaledValue = dec.unscaledValue().longValue();
            int scale = dec.scale();
            while (scale > 0 && unscaledValue % 10 == 0) {
                scale--;
                unscaledValue /= 10;
            }

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                scale--;
                unscaledValue /= 10;
            }


            // If we have trailing zeros after the decimal point, remove them.
            if (scale != dec.scale()) {
                dec = BigDecimal.valueOf(unscaledValue, scale);
            }


            // Finally, convert the value to a string. The method
            // BigDecimal.toPlainString() formats the number the way we want

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    public static DecimalValue decimalDivide(NumericValue a, NumericValue b) throws XPathException {
        final BigDecimal A = a.getDecimalValue();
        final BigDecimal B = b.getDecimalValue();
        int scale = Math.max(DecimalValue.DIVIDE_PRECISION,
                        Math.max(A.scale(), B.scale()));
        try {
            BigDecimal result = A.divide(B, scale, BigDecimal.ROUND_HALF_DOWN);
            return new DecimalValue(result);
        } catch (ArithmeticException err) {
            if (b.compareTo(0) == 0) {

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        // Check overall
        if (type==DataType.DECIMAL)
        {   // Convert to Decimal
            BigDecimal dv = ObjectUtils.toDecimal(n);
            int prec = dv.precision();
            int scale = dv.scale();
            // check precision and scale
            double size = getSize();
            int reqPrec = (int)size;
            int reqScale =((int)(size*10)-(reqPrec*10));
            if ((prec-scale)>(reqPrec-reqScale) || scale>reqScale)

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