mindspore/docs/api/api_python/ops/mindspore.ops.func_sign.rst

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mindspore.ops.sign
===================
.. py:function:: mindspore.ops.sign(x)
按sign公式逐元素计算输入Tensor。
.. math::
\text{out}_{i} = \begin{cases}
-1 & \text{x} < 0 \\
0 & \text{x} = 0 \\
1 & \text{x} > 0
\end{cases}
参数:
- **x** (Tensor) - 输入Tensor。
返回:
Tensor `x` 的sign计算结果。
异常:
- **TypeError** - 如果 `x` 不是Tensor。