public void GetStrictlyUpperTriangleWide()
 {
   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.GetStrictlyUpperTriangle();
   
   Assert.AreEqual(b.RowLength, a.RowLength);
   Assert.AreEqual(b.ColumnLength, a.ColumnLength);
   Assert.AreEqual(b[0,0], 0);
   Assert.AreEqual(b[0,1], a[0,1]);
   Assert.AreEqual(b[0,2], a[0,2]);
   Assert.AreEqual(b[1,0], 0);
   Assert.AreEqual(b[1,1], 0);
   Assert.AreEqual(b[1,2], a[1,2]);
 }
 public void GetStrictlyUpperTriangleLong()
 {
   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.GetStrictlyUpperTriangle();
   
   Assert.AreEqual(b.RowLength, a.RowLength);
   Assert.AreEqual(b.ColumnLength, a.ColumnLength);
   Assert.AreEqual(b[0,0], 0);
   Assert.AreEqual(b[0,1], a[0,1]);
   Assert.AreEqual(b[1,0], 0);
   Assert.AreEqual(b[1,1], 0);
   Assert.AreEqual(b[2,0], 0);
   Assert.AreEqual(b[2,1], 0);   
 }