public void Subtraction()
{
Matrix22D m1 = new Matrix22D(columnMajor, MatrixOrder.ColumnMajor);
Matrix22D m2 = Matrix22D.One;
Matrix22D result = Matrix22D.Subtract(m1, m2);
for (int i = 0; i < 4; i++)
{
Assert.AreEqual(rowMajor[i] - 1.0, result[i]);
}
}