public void UInt128Overflow()
{
UInt128B two = 2;
unchecked {
Assert.IsTrue(UInt128B.MaxValue + UInt128B.One == UInt128B.Zero); // 99 + 1 = [1]00
Assert.IsTrue(UInt128B.MaxValue + UInt128B.MaxValue == UInt128B.MaxValue - UInt128B.One); // 99 + 99 = [1]98
Assert.IsTrue(UInt128B.Zero - UInt128B.One == UInt128B.MaxValue); // [1]00 - 1 = 99
Assert.IsTrue(UInt128B.Zero - UInt128B.MaxValue == UInt128B.One); // [1]00 - 99 = 1
Assert.IsTrue(UInt128B.MaxValue * two == UInt128B.MaxValue - UInt128B.One); // 99 * 2 = [1]98
Assert.IsTrue(UInt128B.MaxValue * UInt128B.MaxValue == UInt128B.One); // 99 * 99 = [98]01
}
}
public void BTest()
{
UInt128B m2 = UInt128B.Multiply(UInt128B.MaxValue, UInt128B.MaxValue);
UInt128B n2 = UInt128B.Add(UInt128B.MaxValue, UInt128B.MaxValue);
uint r;
UInt128B.DivRem(UInt64.MaxValue, 12345, out r);
UInt128B n = UInt128B.Parse("123456789012345678901234567891234567890");
UInt128B d = UInt128B.Parse("9876543210987654321");
UInt128B q = n / d;
}
public void UInt128Equality()
{
UInt128B zero = UInt128B.Zero;
UInt128B one = UInt128B.One;
UInt128B m = UInt64.MaxValue;
UInt128B n = m + 1;
Assert.IsTrue(UInt128B.MinValue == UInt128B.Zero);
Assert.IsTrue(UInt128.Equals(UInt128.MaxValue, UInt128.MaxValue));
Assert.IsTrue(UInt128B.One.Equals((object)UInt128B.One));
Assert.IsTrue(zero != one);
Assert.IsTrue(!one.Equals(zero));
Assert.IsTrue(m + one == n);
Assert.IsTrue(n.Equals(m + one));
Assert.IsTrue(!m.Equals(null));
Assert.IsTrue((m + one).GetHashCode() == n.GetHashCode());
}
public void UInt128Comparison()
{
UInt128B zero = UInt128B.Zero;
UInt128B one = UInt128B.One;
UInt128B n = ((UInt128B)UInt64.MaxValue) + 1;
UInt128B p = UInt128B.MaxValue - 1;
Assert.IsTrue(zero < one);
Assert.IsTrue(zero < n);
Assert.IsTrue(one > zero);
Assert.IsTrue(one < n);
Assert.IsTrue(n > one);
Assert.IsTrue(n < p);
Assert.IsTrue(p >= n);
Assert.IsTrue(n.CompareTo(n) == 0);
Assert.IsTrue(n.CompareTo(p) == -1);
}
public void CompareToBigInteger()
{
Random rng = new Random(1);
UInt128[] values = GetRandomUInt128(rng, 1000).ToArray();
Stopwatch t1 = Stopwatch.StartNew();
for (int i = 0; i < values.Length; i++)
{
for (int j = 0; j < values.Length; j++)
{
UInt128 q = UInt128.DivRem(values[i], values[j], out _);
//UInt128 sum = values[i] - values[j];
}
}
t1.Stop();
Console.WriteLine(t1.ElapsedMilliseconds);
BigInteger[] bigs = new BigInteger[values.Length];
for (int i = 0; i < bigs.Length; i++)
{
bigs[i] = BigInteger.Parse(values[i].ToString());
}
Stopwatch t2 = Stopwatch.StartNew();
for (int i = 0; i < values.Length; i++)
{
for (int j = 0; j < values.Length; j++)
{
BigInteger r;
BigInteger q = BigInteger.DivRem(bigs[i], bigs[j], out r);
//BigInteger q = BigInteger.Add(bigs[i], bigs[j]);
//BigInteger sum = bigs[i] - bigs[j];
}
}
t2.Stop();
Console.WriteLine(t2.ElapsedMilliseconds);
UInt128B[] bValues = new UInt128B[values.Length];
for (int i = 0; i < bValues.Length; i++)
{
uint s0 = (uint)rng.Next();
uint s1 = (uint)rng.Next();
uint s2 = (uint)rng.Next();
uint s3 = (uint)rng.Next();
bValues[i] = new UInt128B(s3, s2, s1, s0);
}
Stopwatch t3 = Stopwatch.StartNew();
for (int i = 0; i < values.Length; i++)
{
for (int j = 0; j < values.Length; j++)
{
//UInt128B p = bValues[i] - bValues[j];
UInt128B q = bValues[i] / bValues[j];
}
}
t3.Stop();
Console.WriteLine(t3.ElapsedMilliseconds);
}
