public void TestEquals()
{
Ellipsoid e1 = Ellipsoid.FromAAndInverseF(100000, 100);
Ellipsoid e2 = Ellipsoid.FromAAndInverseF(100000, 100);
Ellipsoid e3 = Ellipsoid.FromAAndInverseF(100000, 101);
Ellipsoid e4 = Ellipsoid.FromAAndInverseF(100000, 100 + 1e-13);
object s = "123";
Assert.IsTrue(e1.Equals(e2));
Assert.IsFalse(e1.Equals(e3));
Assert.IsTrue(e1.Equals(e4));
Assert.IsFalse(e1.Equals(null));
Assert.IsFalse(e1.Equals(s));
}