mindspore2022/docs/api/api_python/nn/mindspore.nn.Tanh.rst

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mindspore.nn.Tanh
=============================
.. py:class:: mindspore.nn.Tanh
Tanh激活函数。
按元素计算Tanh函数返回一个新的Tensor该Tensor是输入元素的双曲正切值。
Tanh函数定义为
.. math::
tanh(x_i) = \frac{\exp(x_i) - \exp(-x_i)}{\exp(x_i) + \exp(-x_i)} = \frac{\exp(2x_i) - 1}{\exp(2x_i) + 1},
其中 :math:`x_i` 是输入Tensor的元素。
**输入:**
- **x** (Tensor) - 任意维度的Tensor数据类型为float16或float32的输入。
**输出:**
Tensor数据类型和shape与 `x` 的相同。
**异常:**
**TypeError** - `x` 的数据类型既不是float16也不是float32。