Examples with BigDecimal java.math.BigDecimal used on opensource projects

Example 21 with BigDecimal

use of java.math.BigDecimal in project groovy by apache.

the class ObjectRangeTest method testGet.

public void testGet() {
    Range r = createRange(10, 20);
    for (int i = 0; i < 10; i++) {
        Integer value = (Integer) r.get(i);
        assertEquals("Item at index: " + i, i + 10, value.intValue());
    }
    r = createRange(new BigDecimal("3.2"), new BigDecimal("9.9"));
    for (int i = 0; i < r.size(); i++) {
        BigDecimal value = (BigDecimal) r.get(i);
        assertEquals("Item at index: " + i, new BigDecimal("3.2").add(new BigDecimal("" + i)), value);
    }
    r = new ObjectRange(10, 20, false);
    for (int i = 0; i < 10; i++) {
        Integer value = (Integer) r.get(i);
        assertEquals("Item at index: " + i, i + 10, value.intValue());
    }
    r = new ObjectRange(10, 20, true);
    for (int i = 0; i < 10; i++) {
        Integer value = (Integer) r.get(i);
        assertEquals("Item at index: " + i, 20 - i, value.intValue());
    }
}

Example 22 with BigDecimal

use of java.math.BigDecimal in project groovy by apache.

the class NumberRange method calcSize.

void calcSize(Comparable from, Comparable to, Number stepSize) {
    int tempsize = 0;
    boolean shortcut = false;
    if (isIntegral(stepSize)) {
        if ((from instanceof Integer || from instanceof Long) && (to instanceof Integer || to instanceof Long)) {
            // let's fast calculate the size
            final BigInteger fromNum = new BigInteger(from.toString());
            final BigInteger toTemp = new BigInteger(to.toString());
            final BigInteger toNum = inclusive ? toTemp : toTemp.subtract(BigInteger.ONE);
            final BigInteger sizeNum = new BigDecimal(toNum.subtract(fromNum)).divide(new BigDecimal(stepSize.longValue()), BigDecimal.ROUND_DOWN).toBigInteger().add(BigInteger.ONE);
            tempsize = sizeNum.compareTo(BigInteger.valueOf(Integer.MAX_VALUE)) == -1 ? sizeNum.intValue() : Integer.MAX_VALUE;
            shortcut = true;
        } else if (((from instanceof BigDecimal || from instanceof BigInteger) && to instanceof Number) || ((to instanceof BigDecimal || to instanceof BigInteger) && from instanceof Number)) {
            // let's fast calculate the size
            final BigDecimal fromNum = new BigDecimal(from.toString());
            final BigDecimal toTemp = new BigDecimal(to.toString());
            final BigDecimal toNum = inclusive ? toTemp : toTemp.subtract(new BigDecimal("1.0"));
            final BigInteger sizeNum = toNum.subtract(fromNum).divide(new BigDecimal(stepSize.longValue()), BigDecimal.ROUND_DOWN).toBigInteger().add(BigInteger.ONE);
            tempsize = sizeNum.compareTo(BigInteger.valueOf(Integer.MAX_VALUE)) == -1 ? sizeNum.intValue() : Integer.MAX_VALUE;
            shortcut = true;
        }
    }
    if (!shortcut) {
        // let's brute-force calculate the size by iterating start to end
        final Iterator iter = new StepIterator(this, stepSize);
        while (iter.hasNext()) {
            tempsize++;
            // integer overflow
            if (tempsize < 0) {
                break;
            }
            iter.next();
        }
        // integer overflow
        if (tempsize < 0) {
            tempsize = Integer.MAX_VALUE;
        }
    }
    size = tempsize;
}

Example 23 with BigDecimal

use of java.math.BigDecimal in project groovy by apache.

the class BigDecimalMath method divideImpl.

public Number divideImpl(Number left, Number right) {
    BigDecimal bigLeft = toBigDecimal(left);
    BigDecimal bigRight = toBigDecimal(right);
    try {
        return bigLeft.divide(bigRight);
    } catch (ArithmeticException e) {
        // set a DEFAULT precision if otherwise non-terminating
        int precision = Math.max(bigLeft.precision(), bigRight.precision()) + DIVISION_EXTRA_PRECISION;
        BigDecimal result = bigLeft.divide(bigRight, new MathContext(precision));
        int scale = Math.max(Math.max(bigLeft.scale(), bigRight.scale()), DIVISION_MIN_SCALE);
        if (result.scale() > scale)
            result = result.setScale(scale, BigDecimal.ROUND_HALF_UP);
        return result;
    }
}

Example 24 with BigDecimal

use of java.math.BigDecimal in project groovy by apache.

the class Numbers method parseDecimal.

/**
    *  Builds a Number from the given decimal descriptor.  Uses BigDecimal,
    *  unless, Double or Float is requested.
    *
    *  @param  text literal text to parse
    *  @return instantiated Number object
    *  @throws NumberFormatException if the number does not fit within the type
    *          requested by the type specifier suffix (invalid numbers don't make
    *          it here)
    */
public static Number parseDecimal(String text) {
    text = text.replace("_", "");
    int length = text.length();
    //
    // Strip off any type specifier and convert it to lower
    // case, if present.
    char type = 'x';
    if (isNumericTypeSpecifier(text.charAt(length - 1), true)) {
        type = Character.toLowerCase(text.charAt(length - 1));
        text = text.substring(0, length - 1);
        length -= 1;
    }
    //
    // Build the specified type or default to BigDecimal
    BigDecimal value = new BigDecimal(text);
    switch(type) {
        case 'f':
            if (value.compareTo(MAX_FLOAT) <= 0 && value.compareTo(MIN_FLOAT) >= 0) {
                return new Float(text);
            }
            throw new NumberFormatException("out of range");
        case 'd':
            if (value.compareTo(MAX_DOUBLE) <= 0 && value.compareTo(MIN_DOUBLE) >= 0) {
                return new Double(text);
            }
            throw new NumberFormatException("out of range");
        case 'g':
        default:
            return value;
    }
}

Example 25 with BigDecimal

use of java.math.BigDecimal in project hadoop by apache.

the class TestSplitters method testBigDecimalSplitter.

@Test(timeout = 2000)
public void testBigDecimalSplitter() throws Exception {
    BigDecimalSplitter splitter = new BigDecimalSplitter();
    ResultSet result = mock(ResultSet.class);
    List<InputSplit> splits = splitter.split(configuration, result, "column");
    assertSplits(new String[] { ".*column IS NULL" }, splits);
    when(result.getString(1)).thenReturn("result1");
    when(result.getString(2)).thenReturn("result2");
    when(result.getBigDecimal(1)).thenReturn(new BigDecimal(10));
    when(result.getBigDecimal(2)).thenReturn(new BigDecimal(12));
    splits = splitter.split(configuration, result, "column1");
    assertSplits(new String[] { "column1 >= 10 column1 < 11", "column1 >= 11 column1 <= 12" }, splits);
}