public void ColumnVectorCopy()
{
ColumnVector v = new ColumnVector(3);
// test cloning and equality/inequality testing
ColumnVector vc = v.Copy();
Assert.IsTrue(vc == v);
Assert.IsFalse(vc != v);
// test independence clone and equality/inequality testing
vc[0] += 1.0;
Assert.IsFalse(vc == v);
Assert.IsTrue(vc != v);
}