public void SymmetricMatrixAccess()
{
SymmetricMatrix M = CreateSymmetricRandomMatrix(4, 1);
// check column
ColumnVector c = M.Column(1);
Assert.IsTrue(c.Dimension == M.Dimension);
for (int i = 0; i < c.Dimension; i++)
{
Assert.IsTrue(c[i] == M[i, 1]);
}
// check row
RowVector r = M.Row(1);
Assert.IsTrue(r.Dimension == M.Dimension);
for (int i = 0; i < r.Dimension; i++)
{
Assert.IsTrue(r[i] == c[i]);
}
// check clone
SymmetricMatrix MC = M.Copy();
Assert.IsTrue(MC == M);
Assert.IsFalse(MC != M);
// check independence of clone
MC[0, 1] += 1.0;
Assert.IsFalse(MC == M);
Assert.IsTrue(MC != M);
// check that update was symmetric
Assert.IsTrue(M[0, 1] == M[1, 0]);
}
