public void TestToInt()
{
HugeNumber result = new HugeNumber()
{
true, true, false, false, true
};
long expected = 15;
Assert.AreEqual(expected, result.ToLong(), "ToLong failed for 15.");
result = new HugeNumber()
{
true, false, true, false, true, true
};
expected = -11;
Assert.AreEqual(expected, result.ToLong(), "ToLong failed for 15.");
}
public void TestAddPerformance()
{
Random rnd = new Random(23);
for (int i = 0; i < 100; ++i)
{
int a = rnd.Next(short.MaxValue);
int b = rnd.Next() * rnd.Next(short.MaxValue);
HugeNumber x = new HugeNumber(a);
HugeNumber y = new HugeNumber(b);
HugeNumber z = x + y;
Assert.AreEqual(a + b, z.ToLong(), "Addition failed.");
Assert.AreEqual(a + b, (y + x).ToLong(), "Addition failed.");
}
for (int i = 0; i < 100; ++i)
{ // big numbers
long a = rnd.Next(short.MaxValue) * int.MaxValue;
long b = rnd.Next(short.MaxValue) * rnd.Next(short.MaxValue) * int.MaxValue;
HugeNumber x = new HugeNumber(a);
HugeNumber y = new HugeNumber(b);
HugeNumber z = x + y;
Assert.AreEqual(0, (z).ToLong() - (a + b), "Addition failed.");
}
for (int i = 0; i < 1000; ++i)
{
int a = -rnd.Next(short.MaxValue); // test with negatives
int b = rnd.Next(short.MaxValue) * rnd.Next(short.MaxValue);
HugeNumber x = new HugeNumber(a);
HugeNumber y = new HugeNumber(b);
HugeNumber z = x + y;
Assert.AreEqual(a + b, z.ToLong(), "Addition failed.");
Assert.AreEqual(a + b, (y + x).ToLong(), "Addition failed.");
}
int v = rnd.Next(short.MaxValue);
HugeNumber V = new HugeNumber(v);
Assert.AreEqual(0, (V + V.Negate()).ToLong(), "Addition to 0 failed.");
}