Example usage for java.math BigDecimal pow

Introduction

In this page you can find the example usage for java.math BigDecimal pow.

Prototype

public BigDecimal pow(int n) 

Source Link

Document

Returns a BigDecimal whose value is (thisn), The power is computed exactly, to unlimited precision.

Usage

From source file:Main.java

public static void main(String[] args) {

    BigDecimal bg1 = new BigDecimal("1.23");

    // apply pow method on bg1
    BigDecimal bg2 = bg1.pow(3);

    System.out.println(bg2);/*  ww w.  j  a  v  a  2s  .  c om*/
}

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From source file:Main.java

public static void main(String[] args) {
    BigDecimal decimalA = new BigDecimal("123456789012345");
    BigDecimal decimalB = new BigDecimal("10");

    decimalA = decimalA.add(decimalB);/*from   ww w.j a v  a  2 s  . c o m*/
    System.out.println("decimalA = " + decimalA);

    decimalA = decimalA.multiply(decimalB);
    System.out.println("decimalA = " + decimalA);

    decimalA = decimalA.subtract(decimalB);
    System.out.println("decimalA = " + decimalA);

    decimalA = decimalA.divide(decimalB);
    System.out.println("decimalA = " + decimalA);

    decimalA = decimalA.pow(2);
    System.out.println("decimalA = " + decimalA);

    decimalA = decimalA.negate();
    System.out.println("decimalA = " + decimalA);
}

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From source file:adalid.commons.util.ObjUtils.java

public static BigDecimal xRaisedToTheY(Object x, Object y) {
    BigDecimal bx = NumUtils.numberToBigDecimal(x);
    Integer iy = bx == null ? null : NumUtils.numberToInteger(y);
    return bx == null || iy == null ? null : bx.pow(iy);
}

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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  ww  .  java2s .co  m
    ret = ret.divide(new BigDecimal(data.length - 1), MathContext.DECIMAL128);
    return ret.doubleValue();
}

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From source file:de.tbuchloh.kiskis.model.validation.WeakPasswordValidator.java

public BigDecimal getVariationCnt() {
    final BigDecimal two = new BigDecimal(2);
    return two.pow(_bitSize.intValue());
}

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

public static BigDecimal cos(final BigDecimal angle, MathContext mc, boolean isRadians) {
    if (angle == null)
        return null;
    BigDecimal cos = BigDecimal.ONE;
    BigDecimal radians = isRadians ? angle : valueOf(toRadians(angle), BigDecimal.class);
    BigDecimal nSquare = radians.pow(2);
    int index = 0;
    for (BigDecimal factor : COSINE_FACTOR_DECIMAL128) {
        BigDecimal temporary = factor.multiply(nSquare);
        if (index % 2 == 0)
            temporary = temporary.negate();
        cos = cos.add(temporary);/*from ww w .j a v a 2 s  .  c  o  m*/
        nSquare = nSquare.multiply(radians.pow(2)).setScale(
                ((mc == null ? MathContext.DECIMAL128 : mc).getPrecision() + 2), RoundingMode.HALF_UP);
        index++;
    }

    return cos.setScale((mc == null ? MathContext.DECIMAL128 : mc).getPrecision(), RoundingMode.HALF_UP);
}

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From source file:dom.rootlocus.utils.Utils.java

/**
 * get the module of a complex number/*from   w w w  .  j  a  v a  2s  . c o m*/
 *
 * @param n:the number that we are interested in its module
 * @return the module
 *
 */
public double getModule(Complex n) {
    BigDecimal Re = new BigDecimal(n.getReal());
    BigDecimal Img = new BigDecimal(n.getImaginary());
    return Math.sqrt(Re.pow(2).add(Img.pow(2)).doubleValue());
}

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From source file:org.cirdles.ambapo.LatLongToUTM.java

/**
 * eta refers to the east-west direction
 * //  w ww.j  a v  a2  s .c  om
 * @param changeInLongitudeRadians
 * @param tauPrime
 * @return BigDecimal eta prime
 * 
 * 
 */
private static BigDecimal calcEtaPrimeEast(BigDecimal changeInLongitudeRadians, BigDecimal tauPrime) {

    BigDecimal etaPrime;

    double sinOfLatRad = Math.sin(changeInLongitudeRadians.doubleValue());
    double cosOfLatRad = Math.cos(changeInLongitudeRadians.doubleValue());
    double cosOfLatRadSquared = Math.pow(cosOfLatRad, 2);

    BigDecimal tauPrimeSquared = tauPrime.pow(2);

    double sqrt = Math.sqrt(tauPrimeSquared.doubleValue() + cosOfLatRadSquared);
    double sinOverSqrt = sinOfLatRad / sqrt;

    Asinh asinhOfSin = new Asinh();
    etaPrime = new BigDecimal(asinhOfSin.value(sinOverSqrt));

    return etaPrime;

}

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From source file:org.cirdles.ambapo.UTMToLatLong.java

/**
 * /*from  ww w  . j  a v  a  2s. c  o m*/
 * @param xiPrime
 * @param etaPrime
 * @return tau prime
 */
private static BigDecimal calcTauPrime(BigDecimal xiPrime, BigDecimal etaPrime) {

    double xiPrimeDouble = xiPrime.doubleValue();
    double etaPrimeDouble = etaPrime.doubleValue();

    BigDecimal sinOfXiPrime = new BigDecimal(Math.sin(xiPrimeDouble));
    BigDecimal cosOfXiPrime = new BigDecimal(Math.cos(xiPrimeDouble));
    BigDecimal sinhOfEtaPrime = new BigDecimal(Math.sinh(etaPrimeDouble));

    BigDecimal squareRoot = new BigDecimal(
            Math.sqrt(sinhOfEtaPrime.pow(2).add(cosOfXiPrime.pow(2)).doubleValue()));

    BigDecimal tauPrime = sinOfXiPrime.divide(squareRoot, PRECISION, RoundingMode.HALF_UP);

    return tauPrime;
}

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From source file:org.cirdles.ambapo.UTMToLatLong.java

/**
 * /* w ww. j av  a  2  s .  co m*/
 * @param currentTau
 * @param currentSigma
 * @param originalTau
 * @return function of tau
 */
private static BigDecimal functionOfTau(BigDecimal currentTau, BigDecimal currentSigma,
        BigDecimal originalTau) {

    BigDecimal funcOfTau = originalTau
            .multiply(new BigDecimal(Math.sqrt(1 + currentSigma.pow(2).doubleValue())))
            .subtract(currentSigma.multiply(new BigDecimal(Math.sqrt(1 + currentTau.pow(2).doubleValue()))))
            .subtract(originalTau);

    return funcOfTau;

}

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