


LD
      tensor([[ 7.2079,  0.0000,  0.0000],
              [ 0.5884,  0.9595,  0.0000],
              [ 0.2695, -0.8513,  0.1633]])
      >>> pivots
      tensor([1, 2, 3], dtype=torch.int32)
      >>> info
      tensor(0, dtype=torch.int32)


