Example usage for java.math MathContext UNLIMITED

List of usage examples for java.math MathContext UNLIMITED

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Introduction

In this page you can find the example usage for java.math MathContext UNLIMITED.

Prototype

MathContext UNLIMITED

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Document

A MathContext object whose settings have the values required for unlimited precision arithmetic.

Usage

From source file:com.idylwood.utils.MathUtils.java

static final double multiplyAndSumSlow(final double[] values, final double scale) {
    BigDecimal ret = new BigDecimal(0);
    for (double x : values)
        ret = ret.add(new BigDecimal(x), MathContext.UNLIMITED);
    return ret.multiply(new BigDecimal(scale), MathContext.UNLIMITED).doubleValue();
}

From source file:com.idylwood.utils.MathUtils.java

final public static double meanArbPrec(final double data[]) {
    BigDecimal mean = new BigDecimal(0);
    for (double x : data)
        mean = mean.add(new BigDecimal(x), MathContext.UNLIMITED);
    mean = mean.divide(new BigDecimal(data.length), MathContext.UNLIMITED);
    return mean.doubleValue();
}

From source file:com.idylwood.utils.MathUtils.java

private final static double varianceSlow(final double[] data) {
    BigDecimal mean = new BigDecimal(0);
    for (double x : data)
        mean = mean.add(new BigDecimal(x), MathContext.UNLIMITED);
    mean = mean.divide(new BigDecimal(data.length), MathContext.UNLIMITED);
    //mean = new BigDecimal(mean(data));
    BigDecimal ret = new BigDecimal(0);
    for (double x : data) {
        //BigDecimal summand = ret.add(new BigDecimal(x),MathContext.UNLIMITED);
        BigDecimal summand = new BigDecimal(x).subtract(mean, MathContext.UNLIMITED);
        ret = ret.add(summand.pow(2));//w w w  .j  av  a  2s .  c  o  m
    }
    ret = ret.divide(new BigDecimal(data.length - 1), MathContext.DECIMAL128);
    return ret.doubleValue();
}

From source file:br.com.fidias.chance4j.Chance.java

/**
 * Return a random BigDecimal number./* w w w .  j  a  va 2s  .c o m*/
 * <pre>
 * chance.getBigDecimal(-10, 100, 2);
 * => 45.89
 * </pre>
 *
 * @param min Minimum value to choose from
 * @param max Maximum value to choose from
 * @param fixed Specify a fixed precision
 * @return A random BigDecimal
 * @throws ChanceException
 */
public BigDecimal getBigDecimal(Integer min, Integer max, int fixed) throws ChanceException {
    if (min != null && max != null && max < min) {
        throw new ChanceException("Max must be greater than min.");
    }

    int num;
    int localFixed = (int) Math.pow(10, fixed + FORCE_INCREASE_FIXED);
    int localMax = (int) (Integer.MAX_VALUE / localFixed);
    int localMin = -localMax;
    if (max == null) {
        max = localMax;
    } else if (max > localMax) {
        final String message = "Max specified (%d) is out of range with fixed. " + "Max should be, at most, %d";
        throw new ChanceException(String.format(message, max, localMax));
    }
    if (min == null) {
        min = localMin;
    } else if (min < localMin) {
        final String message = "Min specified (%d) is out of range with fixed. "
                + "Min should be, at least, %d";
        throw new ChanceException(String.format(message, min, localMin));
    }
    num = integer(min * localFixed, max * localFixed);
    BigDecimal bd = new BigDecimal(num).divide(new BigDecimal(localFixed), MathContext.UNLIMITED);
    return bd.setScale(fixed, RoundingMode.UP);
}

From source file:com.liferay.util.FileUtil.java

public static String getsize(File fileName) {
    String finalVal;/*from   w  w  w  .j a v  a  2  s  .  c  o m*/
    long filesize = fileName.length();
    BigDecimal size = new BigDecimal(filesize);
    BigDecimal byteVal = null;
    BigDecimal changedByteVal = null;
    finalVal = "";
    if (filesize <= 0) {
        finalVal = "";
    } else if (filesize < MEGA_BYTE) {
        byteVal = new BigDecimal(KILO_BYTE);
        if (size != null) {
            changedByteVal = size.divide(byteVal, MathContext.UNLIMITED);
            finalVal = Long.toString(Math.round(Math.ceil(changedByteVal.doubleValue()))) + " KB";
        }
    } else if (filesize < GIGA_BYTE) {
        byteVal = new BigDecimal(MEGA_BYTE);
        if (size != null) {
            changedByteVal = size.divide(byteVal, MathContext.UNLIMITED);
            finalVal = Long.toString(Math.round(Math.ceil(changedByteVal.doubleValue()))) + " MB";
        }
    } else if (filesize < TERA_BYTE) {
        byteVal = new BigDecimal(GIGA_BYTE);
        if (size != null) {
            changedByteVal = size.divide(byteVal, MathContext.UNLIMITED);
            finalVal = Long.toString(Math.round(Math.ceil(changedByteVal.doubleValue()))) + " GB";
        }
    } else {
        byteVal = new BigDecimal(TERA_BYTE);
        if (size != null) {
            changedByteVal = size.divide(byteVal, MathContext.UNLIMITED);
            finalVal = Long.toString(Math.round(Math.ceil(changedByteVal.doubleValue()))) + " TB";
        }
    }
    return finalVal;
}

From source file:com.idylwood.utils.MathUtils.java

public static final double sumArbitraryPrecision(final double... values) {
    BigDecimal sum = new BigDecimal(0);
    for (int i = values.length; i-- != 0;)
        sum = sum.add(new BigDecimal(values[i]), MathContext.UNLIMITED);
    return sum.doubleValue();
}

From source file:com.idylwood.utils.MathUtils.java

static final double linearCombinationArbitraryPrecision(final double[] x, final double[] y) {
    final int len = Math.min(x.length, y.length);
    //final double [][] ret = new double[len][2];
    BigDecimal ret = new BigDecimal(0);
    for (int i = len; 0 != i--;) {
        BigDecimal product = new BigDecimal(x[i]).multiply(new BigDecimal(y[i]), MathContext.UNLIMITED);
        ret = ret.add(product, MathContext.UNLIMITED);
    }//from   w w w  .  j  a  v  a  2  s  . co  m
    return ret.doubleValue();
}

From source file:jp.furplag.util.commons.NumberUtils.java

/**
 * {@code (type) (o % divisor)}./*from  w w  w  . jav  a2  s.  co  m*/
 *
 * @param o the object, number or string.
 * @param divisor value by which 'o' is to be divided.
 * @param type return type.
 * @return {@code (type) (o % divisor)}.
 */
public static <T extends Number> T remainder(final Object o, final Number divisor, Class<T> type) {
    if (type == null)
        return null;
    NumberObject nO = NumberObject.of(type);
    Number n = valueOf(o);
    if (n == null)
        return nO.valueOf(null);
    if (divisor == null)
        return nO.valueOf(n);
    if (ClassUtils.isPrimitiveWrapper(n.getClass()) && ClassUtils.isPrimitiveWrapper(divisor.getClass())) {
        return nO.valueOf(valueOf(n, double.class) % valueOf(divisor, double.class));
    }
    if (isInfiniteOrNaN(n) || isInfiniteOrNaN(divisor))
        return nO.valueOf(Double.NaN);

    return nO.valueOf(
            valueOf(n, BigDecimal.class).remainder(valueOf(divisor, BigDecimal.class), MathContext.UNLIMITED));
}

From source file:org.multibit.utils.CSMiscUtils.java

@Deprecated
public static BigInteger calcRawPercentageCharge(CSAsset asset, BigInteger transferAmount) {
    CoinSparkGenesis genesis = asset.getGenesis();
    int chargeBasisPoints = genesis.getChargeBasisPoints();
    if (chargeBasisPoints == 0)
        return BigInteger.ZERO;
    BigDecimal d = new BigDecimal(chargeBasisPoints);
    d = d.movePointLeft(2 + 2); // 2 to get whole percent number, another 2 to get fraction
    d = d.multiply(new BigDecimal(transferAmount), MathContext.UNLIMITED);
    return d.toBigInteger();
}

From source file:org.polymap.kaps.ui.form.NHK2010BewertungFormEditorPage.java

public static void main(String[] args) {
    System.out.println(Math.floor(9.5d + 0.5d));
    System.out.println(Math.floor(9.4d + 0.55d));
    System.out.println(Math.floor(9.49d + 0.55d));
    System.out.println(Math.floor(9.8d + 0.5d));
    System.out.println(Math.round(9.5d));
    System.out.println(Math.round(9.4d));
    System.out.println(Math.round((9.49d * 100) / 100));
    System.out.println(Math.round(9.8d));
    System.out.println(new DecimalFormat("###").format(9.49d));
    BigDecimal bd = new BigDecimal(9.49d);
    bd = bd.round(MathContext.UNLIMITED);
    System.out.println(bd.toString());

}