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

Example 56 with MathContext

use of java.math.MathContext in project robovm by robovm.

the class BigDecimalArithmeticTest method testRemainderMathContextHALF_DOWN.

/**
     * remainder(BigDecimal, MathContext)
     */
public void testRemainderMathContextHALF_DOWN() {
    String a = "3736186567876876578956958765675671119238118911893939591735";
    int aScale = -45;
    String b = "134432345432345748766876876723342238476237823787879183470";
    int bScale = 10;
    int precision = 75;
    RoundingMode rm = RoundingMode.HALF_DOWN;
    MathContext mc = new MathContext(precision, rm);
    String res = "1149310942946292909508821656680979993738625937.2065885780";
    int resScale = 10;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
    BigDecimal result = aNumber.remainder(bNumber, mc);
    assertEquals("incorrect quotient value", res, result.toString());
    assertEquals("incorrect quotient scale", resScale, result.scale());
}

Example 57 with MathContext

use of java.math.MathContext in project robovm by robovm.

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 58 with MathContext

use of java.math.MathContext in project robovm by robovm.

the class BigDecimalArithmeticTest method testMultiplyMathContextScalePosPos.

/**
     * Multiply two numbers of positive scales using MathContext
     */
public void testMultiplyMathContextScalePosPos() {
    String a = "97665696756578755423325476545428779810457634781384756794987";
    int aScale = -25;
    String b = "87656965586786097685674786576598865";
    int bScale = 10;
    String c = "8.561078619600910561431314228543672720908E+108";
    int cScale = -69;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
    MathContext mc = new MathContext(40, RoundingMode.HALF_DOWN);
    BigDecimal result = aNumber.multiply(bNumber, mc);
    assertEquals("incorrect value", c, result.toString());
    assertEquals("incorrect scale", cScale, result.scale());
}

Example 59 with MathContext

use of java.math.MathContext in project robovm by robovm.

the class BigDecimalArithmeticTest method testAddMathContextEqualScaleNegNeg.

/**
     * Add two numbers of equal negative scales using MathContext
     */
public void testAddMathContextEqualScaleNegNeg() {
    String a = "1231212478987482988429808779810457634781384756794987";
    int aScale = -10;
    String b = "747233429293018787918347987234564568";
    int bScale = -10;
    String c = "1.2312E+61";
    int cScale = -57;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
    MathContext mc = new MathContext(5, RoundingMode.FLOOR);
    BigDecimal result = aNumber.add(bNumber, mc);
    assertEquals("incorrect value ", c, result.toString());
    assertEquals("incorrect scale", cScale, result.scale());
}

Example 60 with MathContext

use of java.math.MathContext in project robovm by robovm.

the class BigDecimalArithmeticTest method testRoundMathContextPrecision0.

/**
     * round(BigDecimal, MathContext) when precision = 0
     */
public void testRoundMathContextPrecision0() {
    String a = "3736186567876876578956958765675671119238118911893939591735";
    int aScale = 45;
    int precision = 0;
    RoundingMode rm = RoundingMode.HALF_UP;
    MathContext mc = new MathContext(precision, rm);
    String res = "3736186567876.876578956958765675671119238118911893939591735";
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal result = aNumber.round(mc);
    assertEquals("incorrect quotient value", res, result.toString());
    assertEquals("incorrect quotient scale", aScale, result.scale());
}