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

Example 11 with MathContext

use of java.math.MathContext in project j2objc by google.

the class BigDecimalArithmeticTest method testSubtractMathContextDiffScaleNegPos.

/**
     * Subtract two numbers of different scales using MathContext;
     *  the first is negative
     */
public void testSubtractMathContextDiffScaleNegPos() {
    String a = "986798656676789766678767876078779810457634781384756794987";
    int aScale = -15;
    String b = "747233429293018787918347987234564568";
    int bScale = 40;
    String c = "9.867986566767897666787678760787798104576347813847567949870000000000000E+71";
    int cScale = -2;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
    MathContext mc = new MathContext(70, RoundingMode.HALF_DOWN);
    BigDecimal result = aNumber.subtract(bNumber, mc);
    assertEquals("incorrect value", c, result.toString());
    assertEquals("incorrect scale", cScale, result.scale());
}

Example 12 with MathContext

use of java.math.MathContext in project j2objc by google.

the class BigDecimalArithmeticTest method testAddMathContextEqualScalePosPos.

/**
     * Add two numbers of equal positive scales using MathContext
     */
public void testAddMathContextEqualScalePosPos() {
    String a = "1231212478987482988429808779810457634781384756794987";
    int aScale = 10;
    String b = "747233429293018787918347987234564568";
    int bScale = 10;
    String c = "1.2313E+41";
    int cScale = -37;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
    MathContext mc = new MathContext(5, RoundingMode.UP);
    BigDecimal result = aNumber.add(bNumber, mc);
    assertEquals("incorrect value", c, result.toString());
    assertEquals("incorrect scale", cScale, result.scale());
}

Example 13 with MathContext

use of java.math.MathContext in project j2objc by google.

the class BigDecimalArithmeticTest method testSubtractMathContextEqualScalePosPos.

/**
     * Subtract two numbers of equal positive scales using MathContext
     */
public void testSubtractMathContextEqualScalePosPos() {
    String a = "1231212478987482988429808779810457634781384756794987";
    int aScale = 10;
    String b = "747233429293018787918347987234564568";
    int bScale = 10;
    String c = "1.23121247898749E+41";
    int cScale = -27;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
    MathContext mc = new MathContext(15, RoundingMode.CEILING);
    BigDecimal result = aNumber.subtract(bNumber, mc);
    assertEquals("incorrect value", c, result.toString());
    assertEquals("incorrect scale", cScale, result.scale());
}

Example 14 with MathContext

use of java.math.MathContext in project j2objc by google.

the class BigDecimalArithmeticTest method testDivideAndRemainderMathContextDOWN.

/**
     * divideAndRemainder(BigDecimal, MathContext)
     */
public void testDivideAndRemainderMathContextDOWN() {
    String a = "3736186567876876578956958765675671119238118911893939591735";
    int aScale = 45;
    String b = "134432345432345748766876876723342238476237823787879183470";
    int bScale = 20;
    int precision = 15;
    RoundingMode rm = RoundingMode.DOWN;
    MathContext mc = new MathContext(precision, rm);
    String res = "0E-25";
    int resScale = 25;
    String rem = "3736186567876.876578956958765675671119238118911893939591735";
    int remScale = 45;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
    BigDecimal[] result = aNumber.divideAndRemainder(bNumber, mc);
    assertEquals("incorrect quotient value", res, result[0].toString());
    assertEquals("incorrect quotient scale", resScale, result[0].scale());
    assertEquals("incorrect remainder value", rem, result[1].toString());
    assertEquals("incorrect remainder scale", remScale, result[1].scale());
}

Example 15 with MathContext

use of java.math.MathContext in project j2objc by google.

the class BigDecimalArithmeticTest method testDivideBigDecimalScaleMathContextUP.

/**
     * divide(BigDecimal, MathContext)
     */
public void testDivideBigDecimalScaleMathContextUP() {
    String a = "3736186567876876578956958765675671119238118911893939591735";
    int aScale = 15;
    String b = "748766876876723342238476237823787879183470";
    int bScale = 10;
    int precision = 21;
    RoundingMode rm = RoundingMode.UP;
    MathContext mc = new MathContext(precision, rm);
    String c = "49897861180.2562512996";
    int resScale = 10;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
    BigDecimal result = aNumber.divide(bNumber, mc);
    assertEquals("incorrect value", c, result.toString());
    assertEquals("incorrect scale", resScale, result.scale());
}