Examples of java.math.BigDecimal.floatValue()

java.math.BigDecimal.floatValue()
sun.com/docs/books/jls/second_edition/html/conversions.doc.html#25363">narrowing primitive conversion from {@code double} to{@code float} defined in the Java Language Specification: if this {@code BigDecimal} has too great amagnitude to represent as a {@code float}, it will be converted to {@link Float#NEGATIVE_INFINITY} or {@link Float#POSITIVE_INFINITY} as appropriate. Note that even whenthe return value is finite, this conversion can lose information about the precision of the {@code BigDecimal}value. @return this {@code BigDecimal} converted to a {@code float}.

                break;
            case NUMERIC_DOUBLE:
                dcv.setNumericValue( value == null ? null : value.doubleValue() );
                break;
            case NUMERIC_FLOAT:
                dcv.setNumericValue( value == null ? null : value.floatValue() );
                break;
            case NUMERIC_INTEGER:
                dcv.setNumericValue( value == null ? null : value.intValue() );
                break;
            case NUMERIC_LONG:

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                break;
            case NUMERIC_DOUBLE:
                dcv.setNumericValue( value == null ? null : value.doubleValue() );
                break;
            case NUMERIC_FLOAT:
                dcv.setNumericValue( value == null ? null : value.floatValue() );
                break;
            case NUMERIC_INTEGER:
                dcv.setNumericValue( value == null ? null : value.intValue() );
                break;
            case NUMERIC_LONG:

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                // happen again.
                BigDecimal quantity = getQuantity(tableName, null);
                double newQuantity;
                if (timeLapse > 0)
                {
                    float rate = quantity.floatValue() / timeLapse;
                    newQuantity
                            = Math.ceil(SLEEP_PERIOD * rate * SAFETY_MARGIN);
                    log.debug("checkTiming(): calculated new quantity "
                            + newQuantity + " from rate " + rate);
                }

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                }
                else
                {
                    // time lapse is so small that it was not measurable
                    // use factor 2
                    newQuantity = quantity.floatValue() * 2;
                    log.debug("checkTiming(): calculated new quantity "
                            + newQuantity
                            + " from double the old quantity (time lapse 0)");
                }

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     */
    public void testFloatValueNeg() {
        String a = "-1238096483923847.6356789029578E+21";
        BigDecimal aNumber = new BigDecimal(a);
        float result = -1.2380965E36F;
        assertTrue("incorrect value", aNumber.floatValue() == result);
    }


    /**
     * Float value of a positive BigDecimal
     */

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     */
    public void testFloatValuePos() {
        String a = "1238096483923847.6356789029578E+21";
        BigDecimal aNumber = new BigDecimal(a);
        float result = 1.2380965E36F;
        assertTrue("incorrect value", aNumber.floatValue() == result);
    }


    /**
     * Float value of a large positive BigDecimal
     */

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     */
    public void testFloatValuePosInfinity() {
        String a = "123809648373567356745735.6356789787678287E+200";
        BigDecimal aNumber = new BigDecimal(a);
        float result = Float.POSITIVE_INFINITY;
        assertTrue("incorrect value", aNumber.floatValue() == result);
    }


    /**
     * Float value of a large negative BigDecimal
     */

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     */
    public void testFloatValueNegInfinity() {
        String a = "-123809648392384755735.63567887678287E+200";
        BigDecimal aNumber = new BigDecimal(a);
        float result = Float.NEGATIVE_INFINITY;
        assertTrue("incorrect value", aNumber.floatValue() == result);
    }


    /**
     * Float value of a small negative BigDecimal
     */

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     */
    public void testFloatValueMinusZero() {
        String a = "-123809648392384754573567356745735.63567890295784902768787678287E-400";
        BigDecimal aNumber = new BigDecimal(a);
        int minusZero = -2147483648;
        float result = aNumber.floatValue();
        assertTrue("incorrect value", Float.floatToIntBits(result) == minusZero);
    }


    /**
     * Float value of a small positive BigDecimal

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     */
    public void testFloatValuePlusZero() {
        String a = "123809648392384754573567356745735.63567890295784902768787678287E-400";
        BigDecimal aNumber = new BigDecimal(a);
        int zero = 0;
        float result = aNumber.floatValue();
        assertTrue("incorrect value", Float.floatToIntBits(result) == zero);
    }


    /**
     * Integer value of a negative BigDecimal

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