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

Example 41 with MathContext

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

the class OldBigDecimalArithmeticTest method testDivideToIntegralValueMathContextNonTrivial.

public void testDivideToIntegralValueMathContextNonTrivial() {
    MathContext mc;
    BigDecimal a, b, res;
    a = new BigDecimal("92345678901234567.8");
    b = new BigDecimal("43");
    res = a.multiply(b);
    assertEquals("incorrect value", "3970864192753086415.4", res.toString());
    mc = new MathContext(20, RoundingMode.DOWN);
    a = new BigDecimal("3970864192753086415.4");
    b = new BigDecimal("92345678901234567.8");
    b = new BigDecimal("92345678901234567.8001");
    assertEquals("incorrect value", "43", a.round(mc).divideToIntegralValue(b.round(mc)).toString());
    res = a.divideToIntegralValue(b, mc);
    assertEquals("incorrect value", "42", res.toString());
    //        mc = new MathContext(1, RoundingMode.DOWN);
    //        res = a.divideToIntegralValue(b, mc);
    //        assertEquals("incorrect value", "42", res.toString());
    mc = new MathContext(17, RoundingMode.FLOOR);
    a = new BigDecimal("518518513851851830");
    b = new BigDecimal("12345678901234567.9");
    assertEquals("incorrect value", "42", a.round(mc).divideToIntegralValue(b.round(mc)).toString());
    res = a.divideToIntegralValue(b, mc);
    assertEquals("incorrect value", "41", res.toString());
}

Example 42 with MathContext

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

the class OldBigDecimalConstructorsTest method testConstrDoubleMathContext_AndroidFailure.

public void testConstrDoubleMathContext_AndroidFailure() {
    BigDecimal bd;
    MathContext mc;
    mc = new MathContext(11, RoundingMode.HALF_EVEN);
    //
    // VERY FUNNY:
    // This works:
    bd = new BigDecimal("123456789.125", mc);
    assertEquals("incorrect value", "123456789.12", bd.toString());
    // But this doesn't:
    bd = new BigDecimal(123456789.125, mc);
    assertEquals("incorrect value", "123456789.12", bd.toString());
    bd = new BigDecimal(-123456789.125, mc);
    assertEquals("incorrect value", "-123456789.12", bd.toString());
    // AND HERE, TOO:
    mc = new MathContext(11, RoundingMode.HALF_UP);
    bd = new BigDecimal(123456789.125, mc);
    assertEquals("incorrect value", "123456789.13", bd.toString());
    bd = new BigDecimal(-123456789.125, mc);
    assertEquals("incorrect value", "-123456789.13", bd.toString());
    mc = new MathContext(11, RoundingMode.HALF_DOWN);
    //
    // SAME HERE:
    // This works:
    bd = new BigDecimal("123456789.125", mc);
    assertEquals("incorrect value", "123456789.12", bd.toString());
    // But this doesn't:
    bd = new BigDecimal(123456789.125, mc);
    assertEquals("incorrect value", "123456789.12", bd.toString());
    bd = new BigDecimal(123456789.125, mc);
    assertEquals("incorrect value", "123456789.12", bd.toString());
    bd = new BigDecimal(-123456789.125, mc);
    assertEquals("incorrect value", "-123456789.12", bd.toString());
}

Example 43 with MathContext

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

the class OldBigDecimalConvertTest method test_ByteValueStringZero.

public void test_ByteValueStringZero() {
    String sNumber = "00000";
    int iNumber = 0;
    int iPresition = 0;
    MathContext mc = new MathContext(iPresition, RoundingMode.HALF_UP);
    BigDecimal bdNumber = new BigDecimal(sNumber, mc);
    byte bNumber = bdNumber.byteValue();
    assertTrue("incorrect byteValue", iNumber == bNumber);
}

Example 44 with MathContext

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

the class OldBigDecimalConvertTest method test_ByteValueCharZero.

public void test_ByteValueCharZero() {
    char[] cNumber = { '-', '0', '.', '0' };
    int iNumber = 0;
    int iPresition = 0;
    MathContext mc = new MathContext(iPresition, RoundingMode.HALF_UP);
    BigDecimal bdNumber = new BigDecimal(cNumber, mc);
    byte bNumber = bdNumber.byteValue();
    assertTrue("incorrect byteValue", iNumber == bNumber);
}

Example 45 with MathContext

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

the class OldBigDecimalConvertTest method test_ByteValueExactCharZero.

public void test_ByteValueExactCharZero() {
    char[] cNumber = { '-', '0', '.', '0' };
    int iNumber = 0;
    int iPresition = 5;
    MathContext mc = new MathContext(iPresition, RoundingMode.HALF_DOWN);
    BigDecimal bdNumber = new BigDecimal(cNumber, mc);
    byte bNumber = bdNumber.byteValueExact();
    assertTrue("incorrect byteValueExact", iNumber == bNumber);
}