Traditional column-based L0
---------------------------
V[  3] = V[  3] + L[1,3]*V[  1]
0.9375 = -1.26316 + -0.789474*-2.7875
V[  2] = V[  2] + L[1,2]*V[  1]
-0.846875 =  -0.15 +   0.25*-2.7875
V[  2] = V[  2] + L[3,2]*V[  3]
-0.925 = -0.846875 + -0.0833333*0.9375
V[  4] = V[  4] + L[3,4]*V[  3]
-0.3125 =      0 + -0.333333*0.9375

Solution vector
            -2.7875             -0.925             0.9375            -0.3125


New row-based L0
----------------
V[  4] = V[  4] + L[3,4]*V[  3]
0.421053 =      0 + -0.333333*-1.26316
V[  2] = V[  2] + L[3,2]*V[  3]
-0.0447368 =  -0.15 + -0.0833333*-1.26316
V[  2] = V[  2] + L[1,2]*V[  1]
-0.741612 = -0.0447368 +   0.25*-2.7875
V[  3] = V[  3] + L[1,3]*V[  1]
0.9375 = -1.26316 + -0.789474*-2.7875

Solution vector
            -2.7875          -0.741612             0.9375           0.421053


L0 generated
----------------
         0         0         0         0
         0         0         0         0
         0      0.25 -0.789474         0
         0-0.0833333         0 -0.333333