>>> import paddle
>>> paddle.device.set_device('cpu')
>>> paddle.digamma(paddle.to_tensor([float('0.0'), float('-0.0')]))
# Tensor(shape=[2], dtype=float32, place=Place(cpu), stop_gradient=True,
#        [-inf.,  inf.])
>>> paddle.device.set_device('gpu')
>>> paddle.digamma(paddle.to_tensor([float('0.0'), float('-0.0')]))
# Tensor(shape=[2], dtype=float32, place=Place(gpu:0), stop_gradient=True,
#        [-inf.,  inf.])