public void GetLowerTriangleWide()
{
DoubleMatrix a = new DoubleMatrix(2,3);
a[0,0] = 1;
a[0,1] = 2;
a[0,2] = 3;
a[1,0] = 4;
a[1,1] = 5;
a[1,2] = 6;
DoubleMatrix b = a.GetLowerTriangle();
Assert.AreEqual(b.RowLength, a.RowLength);
Assert.AreEqual(b.ColumnLength, a.ColumnLength);
Assert.AreEqual(b[0,0], a[0,0]);
Assert.AreEqual(b[0,1], 0);
Assert.AreEqual(b[0,2], 0);
Assert.AreEqual(b[1,0], a[1,0]);
Assert.AreEqual(b[1,1], a[1,1]);
Assert.AreEqual(b[1,2], 0);
}
public void GetLowerTriangleLong()
{
DoubleMatrix a = new DoubleMatrix(3,2);
a[0,0] = 1;
a[0,1] = 2;
a[1,0] = 4;
a[1,1] = 5;
a[2,0] = 7;
a[2,1] = 8;
DoubleMatrix b = a.GetLowerTriangle();
Assert.AreEqual(b.RowLength, a.RowLength);
Assert.AreEqual(b.ColumnLength, a.ColumnLength);
Assert.AreEqual(b[0,0], a[0,0]);
Assert.AreEqual(b[0,1], 0);
Assert.AreEqual(b[1,0], b[1,0]);
Assert.AreEqual(b[1,1], a[1,1]);
Assert.AreEqual(b[2,0], b[2,0]);
Assert.AreEqual(b[2,1], b[2,1]);
}