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}.

                    request.put("item_" + lineNumber + "_productName", item.getString("description"));
                }
                // get the quantity..
                BigDecimal quantity = item.getBigDecimal("quantity");
                // test quantity if INT pass as is; if not pass as 1
                if (quantity.scale() > 0) {
                    request.put("item_" + lineNumber + "_quantity", "1");
                } else {
                    request.put("", Integer.toString(quantity.intValue()));
                }
                // set the amount to 0.0000 -- we will send a total too.

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                throw new ValidationException(err);
            }
            temp = null;
        }


        if (_fractionDigits != -1 && clean.scale() > _fractionDigits) {
            String err = "BigDecimal " + bd + " has too many fraction digits -- must have "
                    + _fractionDigits + " fraction digits or fewer";
            throw new ValidationException(err);
        }

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        /*
         * la précision doit être >= 0...
         */
        if(p<0) throw new InterpreterException(StdErrors.extend(StdErrors.Out_of_range, "precision "+p+" must be >= 0" ));
        BigDecimal r=number.get();
        int digits=r.precision()-r.scale();
        MathContext mc=context.get();
        MathContext nmc = new MathContext(digits<0 ? p+1 : p + digits, mc.getRoundingMode()); // more precision...
        context.getAndSet( nmc );                  
        return null;
    }

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     * @throws Exception
     */
    public Node external_get_precision(Node startAt) throws Exception {
        startAt.isGoodArgsCnt(1);
        BigDecimal r=number.get();
        int digits=r.precision()-r.scale();
        MathContext mc=context.get();
        return new Node(digits<0 ? Math.abs(digits)-1 : mc.getPrecision() - digits);
    }
    
    /**

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    public Node external_precision(Node startAt) throws Exception {
        startAt.isGoodArgsCnt(2);
        int c=(int)startAt.getSubNode(1, Node.TYPE_NUMBER).getNumber();
        if(c<0) throw new InterpreterException(StdErrors.extend(StdErrors.Out_of_range, "precision "+c+" must be >= 0" ));
        BigDecimal r=number.get();
        int digits=r.precision()-r.scale();
        MathContext mc=context.get();
        MathContext nmc = new MathContext(digits<0 ? c+1 : c + digits, mc.getRoundingMode()); // more precision...
        return Node.createExternal(new External_Decimal(number.get().round(nmc),nmc));
    }

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    public Node external_mutator_precision(Node startAt) throws Exception {
        startAt.isGoodArgsCnt(2);
        int c=(int)startAt.getSubNode(1, Node.TYPE_NUMBER).getNumber();
        if(c<0) throw new InterpreterException(StdErrors.extend(StdErrors.Out_of_range, "precision "+c+" must be >= 0" ));
        BigDecimal r=number.get();
        int digits=r.precision()-r.scale();
        MathContext mc=context.get();
        context.getAndSet( new MathContext(digits<0 ? c+1 : c + digits, mc.getRoundingMode()) ); 
        number.getAndSet(number.get().round(context.get()));
        return null;
    }

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            /**
             * Attention! La division doit être limitée par me contexte, sinon une division comme 1/3 donne lieu à une execption.
             */
            try {
                BigDecimal v=number.get();
                int digits=Math.abs(v.precision()-v.scale());
                MathContext nmc = new MathContext(mc.getPrecision() + digits, mc.getRoundingMode()); // more precision...
                return Node.createExternal(new External_Decimal(d.divide(number.get(), nmc),mc));
            }
            catch (ArithmeticException ex) {
                // prévoir la gestion de l'exception division par zéro sur exception seulement.

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             */
            MathContext nmc = new MathContext(mc.getPrecision() + 2, mc.getRoundingMode()); // more precision...
            for (int i = 1; i < asize; ){
                BigDecimal v=_getArg_(startAt, i++);
                int digits0=Math.abs(r.precision()-r.scale());
                int digits1=Math.abs(v.precision()-v.scale());
                nmc = new MathContext(nmc.getPrecision() + digits0 + digits1, mc.getRoundingMode()); // more precision...
                r = r.divide(v, nmc);
            }
        }
        catch (ArithmeticException ex) {

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            BigDecimal r;
            do {
                old_r = number.get();
                r = old_r;
                for (int i = 0; i < v.length; i++){
                    int digits0=Math.abs(r.precision()-r.scale());
                    int digits1=Math.abs(v[i].precision()-v[i].scale());
                    nmc = new MathContext(nmc.getPrecision() + digits0 + digits1, mc.getRoundingMode()); // more precision...
                    r = r.divide(v[i],nmc);
                }
            }

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    {
        // We've used a char[] rather than a StringBuffer for a 4x speedup
        // -YY(10)YY-MM-DDTHH:MM:SS.FFFFFF+ZH:ZM
        // 1 + 10   + 3+ 3+ 3+ 3+ 3+1 + s + 3+ 3 = 33 + s
        BigDecimal fs = spec.getFraction();
        char[] message = new char[33 + (fs == null ? 0 : fs.scale())];
        int i = 0;


        if (spec.hasYear() || spec.hasMonth() || spec.hasDay())
        {
            dmy: {

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