Example usage for java.math BigDecimal multiply

Introduction

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

Prototype

public BigDecimal multiply(BigDecimal multiplicand)

Source Link

Document

Returns a BigDecimal whose value is (this × multiplicand), and whose scale is (this.scale() + multiplicand.scale()) .

Usage

From source file:Main.java

public static BigDecimal subtractVatAmount(BigDecimal percentage, BigDecimal amount) {
    BigDecimal f = BigDecimal.ONE
            .subtract(BigDecimal.ONE.divide(percentage.add(HUNDRED).divide(HUNDRED), 14, RoundingMode.HALF_UP));
    return amount.multiply(f).setScale(2, RoundingMode.HALF_UP);
}

From source file:Main.java

public static double mulddd(double value1, double value2, double value3) {
    BigDecimal b1 = new BigDecimal(Double.toString(value1));
    BigDecimal b2 = new BigDecimal(Double.toString(value2));
    BigDecimal b3 = new BigDecimal(Double.toString(value3));
    return b1.multiply(b2).multiply(b3).doubleValue();
}

From source file:com.surfs.storage.web.utils.Stringutils.java

public static String convertToKB(String total) {
    if (StringUtils.isBlank(total)) {
        return total;
    }//ww  w.  ja v  a  2 s.  com

    String space = total.substring(0, total.length() - 1);
    String unit = total.substring(total.length() - 1, total.length());

    BigDecimal t = new BigDecimal(space);
    BigDecimal multiply = null;

    if (unit.equalsIgnoreCase("M")) {
        multiply = t.multiply(new BigDecimal("1048576"));
    } else if (unit.equalsIgnoreCase("T")) {
        multiply = t.multiply(new BigDecimal("1099511627776"));
    } else if (unit.equalsIgnoreCase("G")) {
        multiply = t.multiply(new BigDecimal("1073741824"));
    }

    return String.valueOf(multiply.doubleValue());
}

From source file:Main.java

/**
 * Multiplies two decimals and applies the given scale and a ROUND_HALF_UP. This method should be used only for the final result
 * calculation.For example if we have something like this: (axb)/c the rules should be applied to the result of the division
 * only and not all the computations that give us the final result.
 * /*from w  w w  . jav a 2 s.co m*/
 * @param multiplier1 first multiplier
 * @param multiplier2 second multiplier
 * @param scale the scale fo the result
 * @return the result of the multiplication after scale and rounding are applied
 */
public static BigDecimal multiply(BigDecimal multiplier1, BigDecimal multiplier2, int scale) {

    BigDecimal result = BigDecimal.ZERO;

    if (multiplier1 != null && multiplier2 != null) {
        result = multiplier1.multiply(multiplier2);
    }

    result = result.setScale(scale, BigDecimal.ROUND_HALF_UP);
    return result;
}

From source file:client.Pi.java

/**
 * Compute the value of pi to the specified number of 
 * digits after the decimal point.  The value is 
 * computed using Machin's formula://from www . j a v  a  2 s . com
 *
 *          pi/4 = 4*arctan(1/5) - arctan(1/239)
 *
 * and a power series expansion of arctan(x) to 
 * sufficient precision.
 */
public static BigDecimal computePi(int digits) {
    int scale = digits + 5;
    BigDecimal arctan1_5 = arctan(5, scale);
    BigDecimal arctan1_239 = arctan(239, scale);
    BigDecimal pi = arctan1_5.multiply(FOUR).subtract(arctan1_239).multiply(FOUR);
    return pi.setScale(digits, BigDecimal.ROUND_HALF_UP);
}

From source file:Main.java

public static BigDecimal cosine(BigDecimal x) {

    BigDecimal currentValue = BigDecimal.ONE;
    BigDecimal lastVal = currentValue.add(BigDecimal.ONE);
    BigDecimal xSquared = x.multiply(x);
    BigDecimal numerator = BigDecimal.ONE;
    BigDecimal denominator = BigDecimal.ONE;
    int i = 0;/*from   ww  w.  j  a v a 2s . c  o m*/

    while (lastVal.compareTo(currentValue) != 0) {
        lastVal = currentValue;

        int z = 2 * i + 2;

        denominator = denominator.multiply(BigDecimal.valueOf(z));
        denominator = denominator.multiply(BigDecimal.valueOf(z - 1));
        numerator = numerator.multiply(xSquared);

        BigDecimal term = numerator.divide(denominator, SCALE + 5, ROUNDING_MODE);

        if (i % 2 == 0) {
            currentValue = currentValue.subtract(term);
        } else {
            currentValue = currentValue.add(term);
        }
        i++;
    }

    return currentValue;
}

From source file:Main.java

public static BigDecimal cosine(BigDecimal x) {

    BigDecimal currentValue = BigDecimal.ONE;
    BigDecimal lastVal = currentValue.add(BigDecimal.ONE);
    BigDecimal xSquared = x.multiply(x);
    BigDecimal numerator = BigDecimal.ONE;
    BigDecimal denominator = BigDecimal.ONE;
    int i = 0;/*from  w  ww.ja  v  a 2 s.  co  m*/

    while (lastVal.compareTo(currentValue) != 0) {
        lastVal = currentValue;

        int z = 2 * i + 2;

        denominator = denominator.multiply(BigDecimal.valueOf(z));
        denominator = denominator.multiply(BigDecimal.valueOf(z - 1));
        numerator = numerator.multiply(xSquared);

        BigDecimal term = numerator.divide(denominator, SCALE + 5, ROUNDING_MODE);

        if (i % 2 != 0) {
            currentValue = currentValue.add(term);
        } else {
            currentValue = currentValue.subtract(term);
        }
        i++;
    }

    return currentValue;
}

From source file:gov.nih.nci.calims2.ui.administration.customerservice.serviceitem.ServiceItemHelper.java

/**
 * Give the sub total value from quantity and rate.
 * //from  w  ww  .j  a va  2 s.co m
 * @param row The ServiceItem type
 * @return The sub total corresponding to the given value. Returns null if the subtotal can not be calculated
 */
public static BigDecimal getsubTotalValue(ServiceItem row) {
    Quantity quantity = row.getQuantity();
    Rate rate = row.getServiceItemRate();
    if (quantity == null || StringUtils.isBlank(quantity.getValue()) || rate == null
            || rate.getQuantity() == null || StringUtils.isBlank(rate.getQuantity().getValue())) {
        return null;
    }
    BigDecimal bigDecQty = new BigDecimal(quantity.getValue());
    BigDecimal bigDecRate = new BigDecimal(rate.getQuantity().getValue());
    BigDecimal subtotal = bigDecQty.multiply(bigDecRate);
    return subtotal;
}

From source file:Main.java

public static BigDecimal sine(BigDecimal x) {
    BigDecimal lastVal = x.add(BigDecimal.ONE);
    BigDecimal currentValue = x;//w  w  w  .ja  va 2s  . c  o m
    BigDecimal xSquared = x.multiply(x);
    BigDecimal numerator = x;
    BigDecimal denominator = BigDecimal.ONE;
    int i = 0;

    while (lastVal.compareTo(currentValue) != 0) {
        lastVal = currentValue;

        int z = 2 * i + 3;

        denominator = denominator.multiply(BigDecimal.valueOf(z));
        denominator = denominator.multiply(BigDecimal.valueOf(z - 1));
        numerator = numerator.multiply(xSquared);

        BigDecimal term = numerator.divide(denominator, SCALE + 5, ROUNDING_MODE);

        if (i % 2 == 0) {
            currentValue = currentValue.subtract(term);
        } else {
            currentValue = currentValue.add(term);
        }

        i++;
    }
    return currentValue;
}

From source file:Main.java

public static BigDecimal sine(BigDecimal x) {
    BigDecimal lastVal = x.add(BigDecimal.ONE);
    BigDecimal currentValue = x;//  w ww.  j a  v  a 2  s  .co m
    BigDecimal xSquared = x.multiply(x);
    BigDecimal numerator = x;
    BigDecimal denominator = BigDecimal.ONE;
    int i = 0;

    while (lastVal.compareTo(currentValue) != 0) {
        lastVal = currentValue;

        int z = 2 * i + 3;

        denominator = denominator.multiply(BigDecimal.valueOf(z));
        denominator = denominator.multiply(BigDecimal.valueOf(z - 1));
        numerator = numerator.multiply(xSquared);

        BigDecimal term = numerator.divide(denominator, SCALE + 5, ROUNDING_MODE);

        if (i % 2 != 0) {
            currentValue = currentValue.add(term);
        } else {
            currentValue = currentValue.subtract(term);
        }

        i++;
    }
    return currentValue;
}