tensor([-1.7120,  0.1734, -0.0478, -0.0922])
      >>> torch.clamp(a, min=-0.5, max=0.5)
      tensor([-0.5000,  0.1734, -0.0478, -0.0922])
  >>> min = torch.linspace(-1, 1, steps=4)
  >>> torch.clamp(a, min=min)
  tensor([-1.0000,  0.1734,  0.3333,  1.0000])
