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

Example 46 with MathContext

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

the class BigDecimalArithmeticTest method testDivideBigDecimalScaleMathContextHALF_EVEN.

/**
     * divide(BigDecimal, MathContext)
     */
public void testDivideBigDecimalScaleMathContextHALF_EVEN() {
    String a = "3736186567876876578956958765675671119238118911893939591735";
    int aScale = 45;
    String b = "134432345432345748766876876723342238476237823787879183470";
    int bScale = 70;
    int precision = 21;
    RoundingMode rm = RoundingMode.HALF_EVEN;
    MathContext mc = new MathContext(precision, rm);
    String c = "2.77923185514690367475E+26";
    int resScale = -6;
    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());
}

Example 47 with MathContext

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

the class BigDecimalCompareTest method testAbsMathContextPos.

/**
     * Abs(MathContext) of a positive BigDecimal
     */
public void testAbsMathContextPos() {
    String a = "123809648392384754573567356745735.63567890295784902768787678287E+21";
    BigDecimal aNumber = new BigDecimal(a);
    int precision = 41;
    RoundingMode rm = RoundingMode.HALF_EVEN;
    MathContext mc = new MathContext(precision, rm);
    String result = "1.2380964839238475457356735674573563567890E+53";
    int resScale = -13;
    BigDecimal res = aNumber.abs(mc);
    assertEquals("incorrect value", result, res.toString());
    assertEquals("incorrect scale", resScale, res.scale());
}

Example 48 with MathContext

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

the class BigDecimalCompareTest method testAbsMathContextNeg.

/**
     * Abs(MathContext) of a negative BigDecimal
     */
public void testAbsMathContextNeg() {
    String a = "-123809648392384754573567356745735.63567890295784902768787678287E+21";
    BigDecimal aNumber = new BigDecimal(a);
    int precision = 15;
    RoundingMode rm = RoundingMode.HALF_DOWN;
    MathContext mc = new MathContext(precision, rm);
    String result = "1.23809648392385E+53";
    int resScale = -39;
    BigDecimal res = aNumber.abs(mc);
    assertEquals("incorrect value", result, res.toString());
    assertEquals("incorrect scale", resScale, res.scale());
}

Example 49 with MathContext

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

the class BigDecimalConstructorsTest method testConstrCharIntIntMathContextException2.

/**
     * new BigDecimal(char[] value, int offset, int len, MathContext mc); 
     */
public void testConstrCharIntIntMathContextException2() {
    char[] value = { '-', '1', '2', '3', '8', '0', ',', '4', '7', '3', '8', 'E', '-', '4', '2', '3' };
    int offset = 3;
    int len = 120;
    int precision = 4;
    RoundingMode rm = RoundingMode.CEILING;
    MathContext mc = new MathContext(precision, rm);
    try {
        new BigDecimal(value, offset, len, mc);
        fail("NumberFormatException has not been thrown");
    } catch (NumberFormatException e) {
    }
}

Example 50 with MathContext

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

the class BigDecimalArithmeticTest method testMultiplyMathContextDiffScaleNegPos.

/**
     * Multiply two numbers of different scales using MathContext
     */
public void testMultiplyMathContextDiffScaleNegPos() {
    String a = "488757458676796558668876576576579097029810457634781384756794987";
    int aScale = -63;
    String b = "747233429293018787918347987234564568";
    int bScale = 63;
    String c = "3.6521591193960361339707130098174381429788164316E+98";
    int cScale = -52;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
    MathContext mc = new MathContext(47, RoundingMode.HALF_UP);
    BigDecimal result = aNumber.multiply(bNumber, mc);
    assertEquals("incorrect value", c, result.toString());
    assertEquals("incorrect scale", cScale, result.scale());
}