public void MultiplyBigDecimal()
{
BigDecimal multi1 = new BigDecimal(value, 5);
BigDecimal multi2 = new BigDecimal(2.345D);
BigDecimal result = multi1.Multiply(multi2);
Assert.IsTrue(result.ToString().StartsWith("289.51154260") && result.Scale == multi1.Scale + multi2.Scale,
"123.45908 * 2.345 is not correct: " + result);
multi1 = BigDecimal.Parse("34656");
multi2 = BigDecimal.Parse("-2");
result = multi1.Multiply(multi2);
Assert.IsTrue(result.ToString().Equals("-69312") && result.Scale == 0, "34656 * 2 is not correct");
multi1 = new BigDecimal(-2.345E-02);
multi2 = new BigDecimal(-134E130);
result = multi1.Multiply(multi2);
Assert.IsTrue(result.ToDouble() == 3.1422999999999997E130 && result.Scale == multi1.Scale + multi2.Scale,
"-2.345E-02 * -134E130 is not correct " + result.ToDouble());
multi1 = BigDecimal.Parse("11235");
multi2 = BigDecimal.Parse("0");
result = multi1.Multiply(multi2);
Assert.IsTrue(result.ToDouble() == 0 && result.Scale == 0, "11235 * 0 is not correct");
multi1 = BigDecimal.Parse("-0.00234");
multi2 = new BigDecimal(13.4E10);
result = multi1.Multiply(multi2);
Assert.IsTrue(result.ToDouble() == -313560000 && result.Scale == multi1.Scale + multi2.Scale,
"-0.00234 * 13.4E10 is not correct");
}
public void ToDouble()
{
BigDecimal bigDB = new BigDecimal(-1.234E-112);
// Commenting out this part because it causes an endless loop (see HARMONY-319 and HARMONY-329)
// Assert.IsTrue(
// "the double representation of this BigDecimal is not correct",
// bigDB.ToDouble() == -1.234E-112);
bigDB = new BigDecimal(5.00E-324);
Assert.IsTrue(bigDB.ToDouble() == 5.00E-324, "the double representation of bigDecimal is not correct");
bigDB = new BigDecimal(1.79E308);
Assert.IsTrue(bigDB.ToDouble() == 1.79E308 && bigDB.Scale == 0,
"the double representation of bigDecimal is not correct");
bigDB = new BigDecimal(-2.33E102);
Assert.IsTrue(bigDB.ToDouble() == -2.33E102 && bigDB.Scale == 0,
"the double representation of bigDecimal -2.33E102 is not correct");
bigDB = new BigDecimal(Double.MaxValue);
bigDB = bigDB.Add(bigDB);
Assert.IsTrue(bigDB.ToDouble() == Double.PositiveInfinity,
"a + number out of the double range should return infinity");
bigDB = new BigDecimal(-Double.MaxValue);
bigDB = bigDB.Add(bigDB);
Assert.IsTrue(bigDB.ToDouble() == Double.NegativeInfinity,
"a - number out of the double range should return neg infinity");
}
public double ToDouble()
{
/* To meet the risk of individual overflows of the exponents of
* a separate invocation a.doubleValue() or Denominator.doubleValue(), we divide first
* in a BigDecimal environment and convert the result.
*/
BigDecimal adivb = (new BigDecimal(Numerator)).Divide(new BigDecimal(Denominator), MathContext.Decimal128);
return(adivb.ToDouble());
}
public void MovePointLeftI()
{
BigDecimal movePtLeft = BigDecimal.Parse("123456265.34");
BigDecimal alreadyMoved = movePtLeft.MovePointLeft(5);
Assert.IsTrue(alreadyMoved.Scale == 7 && alreadyMoved.ToString().Equals("1234.5626534"), "move point left 5 failed");
movePtLeft = new BigDecimal(value2.Negate(), 0);
alreadyMoved = movePtLeft.MovePointLeft(12);
Assert.IsTrue(alreadyMoved.Scale == 12 && alreadyMoved.ToString().Equals("-0.012334560000"),
"move point left 12 failed");
movePtLeft = new BigDecimal(123E18);
alreadyMoved = movePtLeft.MovePointLeft(2);
Assert.IsTrue(alreadyMoved.Scale == movePtLeft.Scale + 2 && alreadyMoved.ToDouble() == 1.23E18,
"move point left 2 failed");
movePtLeft = new BigDecimal(1.123E-12);
alreadyMoved = movePtLeft.MovePointLeft(3);
Assert.IsTrue(alreadyMoved.Scale == movePtLeft.Scale + 3 && alreadyMoved.ToDouble() == 1.123E-15,
"move point left 3 failed");
movePtLeft = new BigDecimal(value, 2);
alreadyMoved = movePtLeft.MovePointLeft(-2);
Assert.IsTrue(alreadyMoved.Scale == movePtLeft.Scale - 2 && alreadyMoved.ToString().Equals("12345908"),
"move point left -2 failed");
}
public void SubtractBigDecimal()
{
BigDecimal sub1 = BigDecimal.Parse("13948");
BigDecimal sub2 = BigDecimal.Parse("2839.489");
BigDecimal result = sub1.Subtract(sub2);
Assert.IsTrue(result.ToString().Equals("11108.511") && result.Scale == 3, "13948 - 2839.489 is wrong: " + result);
BigDecimal result2 = sub2.Subtract(sub1);
Assert.IsTrue(result2.ToString().Equals("-11108.511") && result2.Scale == 3, "2839.489 - 13948 is wrong");
Assert.IsTrue(result.Equals(result2.Negate()), "13948 - 2839.489 is not the negative of 2839.489 - 13948");
sub1 = new BigDecimal(value, 1);
sub2 = BigDecimal.Parse("0");
result = sub1.Subtract(sub2);
Assert.IsTrue(result.Equals(sub1), "1234590.8 - 0 is wrong");
sub1 = new BigDecimal(1.234E-03);
sub2 = new BigDecimal(3.423E-10);
result = sub1.Subtract(sub2);
Assert.IsTrue(result.ToDouble() == 0.0012339996577, "1.234E-03 - 3.423E-10 is wrong, " + result.ToDouble());
sub1 = new BigDecimal(1234.0123);
sub2 = new BigDecimal(1234.0123000);
result = sub1.Subtract(sub2);
Assert.IsTrue(result.ToDouble() == 0.0, "1234.0123 - 1234.0123000 is wrong, " + result.ToDouble());
}
public void BigDecimalSerialization()
{
// Regression for HARMONY-1896
char[] input = { '1', '5', '6', '7', '8', '7', '.', '0', '0' };
BigDecimal bd = BigDecimal.Parse(input, 0, 9);
MemoryStream bos = new MemoryStream();
BinaryFormatter oos = new BinaryFormatter();
oos.Serialize(bos, bd);
MemoryStream bis = new MemoryStream(bos.ToArray());
BigDecimal nbd = (BigDecimal)oos.Deserialize(bis);
Assert.AreEqual(bd.ToInt32(), nbd.ToInt32());
Assert.AreEqual(bd.ToDouble(), nbd.ToDouble(), 0.0);
Assert.AreEqual(bd.ToString(), nbd.ToString());
}
public void ConstructorDouble()
{
BigDecimal big = new BigDecimal(123E04);
Assert.Equal("1230000", big.ToString());
big = new BigDecimal(1.2345E-12);
Assert.Equal(1.2345E-12, big.ToDouble());
big = new BigDecimal(-12345E-3);
Assert.Equal(-12.345, big.ToDouble());
big = new BigDecimal(5.1234567897654321e138);
Assert.Equal(5.1234567897654321E138, big.ToDouble());
Assert.Equal(0, big.Scale);
big = new BigDecimal(0.1);
Assert.True(big.ToDouble() == 0.1, "the double representation of 0.1 bigDecimal is not correct");
big = new BigDecimal(0.00345);
Assert.True(big.ToDouble() == 0.00345, "the double representation of 0.00345 bigDecimal is not correct");
// regression test for HARMONY-2429
big = new BigDecimal(-0.0);
Assert.True(big.Scale == 0, "the double representation of -0.0 bigDecimal is not correct");
}
public void ConstructorDouble()
{
BigDecimal big = new BigDecimal(123E04);
Assert.AreEqual("1230000", big.ToString(),
"the BigDecimal value taking a double argument is not initialized properly");
big = new BigDecimal(1.2345E-12);
Assert.AreEqual(1.2345E-12, big.ToDouble(), "the double representation is not correct");
big = new BigDecimal(-12345E-3);
Assert.AreEqual(-12.345, big.ToDouble(), "the double representation is not correct");
big = new BigDecimal(5.1234567897654321e138);
Assert.AreEqual(5.1234567897654321E138, big.ToDouble(), "the double representation is not correct");
Assert.AreEqual(0, big.Scale, "the double representation is not correct");
big = new BigDecimal(0.1);
Assert.IsTrue(big.ToDouble() == 0.1, "the double representation of 0.1 bigDecimal is not correct");
big = new BigDecimal(0.00345);
Assert.IsTrue(big.ToDouble() == 0.00345, "the double representation of 0.00345 bigDecimal is not correct");
// regression test for HARMONY-2429
big = new BigDecimal(-0.0);
Assert.IsTrue(big.Scale == 0, "the double representation of -0.0 bigDecimal is not correct");
}
public void MovePointRightI()
{
BigDecimal movePtRight = BigDecimal.Parse("-1.58796521458");
BigDecimal alreadyMoved = movePtRight.MovePointRight(8);
Assert.IsTrue(alreadyMoved.Scale == 3 && alreadyMoved.ToString().Equals("-158796521.458"),
"move point right 8 failed");
movePtRight = new BigDecimal(value, 2);
alreadyMoved = movePtRight.MovePointRight(4);
Assert.IsTrue(alreadyMoved.Scale == 0 && alreadyMoved.ToString().Equals("1234590800"), "move point right 4 failed");
movePtRight = new BigDecimal(134E12);
alreadyMoved = movePtRight.MovePointRight(2);
Assert.IsTrue(alreadyMoved.Scale == 0 && alreadyMoved.ToString().Equals("13400000000000000"),
"move point right 2 failed");
movePtRight = new BigDecimal(-3.4E-10);
alreadyMoved = movePtRight.MovePointRight(5);
Assert.IsTrue(alreadyMoved.Scale == movePtRight.Scale - 5 && alreadyMoved.ToDouble() == -0.000034,
"move point right 5 failed");
alreadyMoved = alreadyMoved.MovePointRight(-5);
Assert.IsTrue(alreadyMoved.Equals(movePtRight), "move point right -5 failed");
}
public void SetScaleII()
{
BigDecimal setScale1 = new BigDecimal(2.323E102);
BigDecimal setScale2 = setScale1.SetScale(4);
Assert.IsTrue(setScale2.Scale == 4, "the number 2.323E102 after setting scale is wrong");
Assert.IsTrue(setScale2.ToDouble() == 2.323E102, "the representation of the number 2.323E102 is wrong");
setScale1 = BigDecimal.Parse("-1.253E-12");
setScale2 = setScale1.SetScale(17, RoundingMode.Ceiling);
Assert.IsTrue(setScale2.Scale == 17, "the number -1.253E-12 after setting scale is wrong");
Assert.IsTrue(setScale2.ToString().Equals("-1.25300E-12"),
"the representation of the number -1.253E-12 after setting scale is wrong, " + setScale2);
// testing rounding Mode ROUND_CEILING
setScale1 = new BigDecimal(value, 4);
setScale2 = setScale1.SetScale(1, RoundingMode.Ceiling);
Assert.IsTrue(setScale2.ToString().Equals("1234.6") && setScale2.Scale == 1,
"the number 1234.5908 after setting scale to 1/ROUND_CEILING is wrong");
BigDecimal setNeg = new BigDecimal(value.Negate(), 4);
setScale2 = setNeg.SetScale(1, RoundingMode.Ceiling);
Assert.IsTrue(setScale2.ToString().Equals("-1234.5") && setScale2.Scale == 1,
"the number -1234.5908 after setting scale to 1/ROUND_CEILING is wrong");
// testing rounding Mode ROUND_DOWN
setScale2 = setNeg.SetScale(1, RoundingMode.Down);
Assert.IsTrue(setScale2.ToString().Equals("-1234.5") && setScale2.Scale == 1,
"the number -1234.5908 after setting scale to 1/ROUND_DOWN is wrong");
setScale1 = new BigDecimal(value, 4);
setScale2 = setScale1.SetScale(1, RoundingMode.Down);
Assert.IsTrue(setScale2.ToString().Equals("1234.5") && setScale2.Scale == 1,
"the number 1234.5908 after setting scale to 1/ROUND_DOWN is wrong");
// testing rounding Mode ROUND_FLOOR
setScale2 = setScale1.SetScale(1, RoundingMode.Floor);
Assert.IsTrue(setScale2.ToString().Equals("1234.5") && setScale2.Scale == 1,
"the number 1234.5908 after setting scale to 1/ROUND_FLOOR is wrong");
setScale2 = setNeg.SetScale(1, RoundingMode.Floor);
Assert.IsTrue(setScale2.ToString().Equals("-1234.6") && setScale2.Scale == 1,
"the number -1234.5908 after setting scale to 1/ROUND_FLOOR is wrong");
// testing rounding Mode ROUND_HALF_DOWN
setScale2 = setScale1.SetScale(3, RoundingMode.HalfDown);
Assert.IsTrue(setScale2.ToString().Equals("1234.591") && setScale2.Scale == 3,
"the number 1234.5908 after setting scale to 3/ROUND_HALF_DOWN is wrong");
setScale1 = new BigDecimal(BigInteger.Parse("12345000"), 5);
setScale2 = setScale1.SetScale(1, RoundingMode.HalfDown);
Assert.IsTrue(setScale2.ToString().Equals("123.4") && setScale2.Scale == 1,
"the number 123.45908 after setting scale to 1/ROUND_HALF_DOWN is wrong");
setScale2 = BigDecimal.Parse("-1234.5000").SetScale(0, RoundingMode.HalfDown);
Assert.IsTrue(setScale2.ToString().Equals("-1234") && setScale2.Scale == 0,
"the number -1234.5908 after setting scale to 0/ROUND_HALF_DOWN is wrong");
// testing rounding Mode ROUND_HALF_EVEN
setScale1 = new BigDecimal(1.2345789D);
setScale2 = setScale1.SetScale(4, RoundingMode.HalfEven);
Assert.IsTrue(setScale2.ToDouble() == 1.2346D && setScale2.Scale == 4,
"the number 1.2345789 after setting scale to 4/ROUND_HALF_EVEN is wrong");
setNeg = new BigDecimal(-1.2335789D);
setScale2 = setNeg.SetScale(2, RoundingMode.HalfEven);
Assert.IsTrue(setScale2.ToDouble() == -1.23D && setScale2.Scale == 2,
"the number -1.2335789 after setting scale to 2/ROUND_HALF_EVEN is wrong");
setScale2 = BigDecimal.Parse("1.2345000").SetScale(3,
RoundingMode.HalfEven);
Assert.IsTrue(setScale2.ToDouble() == 1.234D && setScale2.Scale == 3,
"the number 1.2345789 after setting scale to 3/ROUND_HALF_EVEN is wrong");
setScale2 = BigDecimal.Parse("-1.2345000").SetScale(3,
RoundingMode.HalfEven);
Assert.IsTrue(setScale2.ToDouble() == -1.234D && setScale2.Scale == 3,
"the number -1.2335789 after setting scale to 3/ROUND_HALF_EVEN is wrong");
// testing rounding Mode ROUND_HALF_UP
setScale1 = BigDecimal.Parse("134567.34650");
setScale2 = setScale1.SetScale(3, RoundingMode.HalfUp);
Assert.IsTrue(setScale2.ToString().Equals("134567.347") && setScale2.Scale == 3,
"the number 134567.34658 after setting scale to 3/ROUND_HALF_UP is wrong");
setNeg = BigDecimal.Parse("-1234.4567");
setScale2 = setNeg.SetScale(0, RoundingMode.HalfUp);
Assert.IsTrue(setScale2.ToString().Equals("-1234") && setScale2.Scale == 0,
"the number -1234.4567 after setting scale to 0/ROUND_HALF_UP is wrong");
Assert.Throws <ArithmeticException>(() => setScale1.SetScale(3, RoundingMode.Unnecessary));
// testing rounding Mode ROUND_UP
setScale1 = BigDecimal.Parse("100000.374");
setScale2 = setScale1.SetScale(2, RoundingMode.Up);
Assert.IsTrue(setScale2.ToString().Equals("100000.38") && setScale2.Scale == 2,
"the number 100000.374 after setting scale to 2/ROUND_UP is wrong");
setNeg = new BigDecimal(-134.34589D);
setScale2 = setNeg.SetScale(2, RoundingMode.Up);
Assert.IsTrue(setScale2.ToDouble() == -134.35D && setScale2.Scale == 2,
"the number -134.34589 after setting scale to 2/ROUND_UP is wrong");
Assert.Throws <ArgumentException>(() => setScale1.SetScale(0, -123));
}
