mindspore.ops.Tanh

class mindspore.ops.Tanh(*args, **kwargs)[source]

Tanh activation function.

Computes hyperbolic tangent of input element-wise. The Tanh function is defined as:

\[tanh(x_i) = \frac{\exp(x_i) - \exp(-x_i)}{\exp(x_i) + \exp(-x_i)} = \frac{\exp(2x_i) - 1}{\exp(2x_i) + 1},\]

where \(x_i\) is an element of the input Tensor.

Inputs:

input_x (Tensor) - The input of Tanh with data type of float16 or float32.

Outputs:

Tensor, with the same type and shape as the input_x.

Raises

TypeError – If dtype of input_x is neither float16 nor float32.
TypeError – If input_x is not a Tensor.

Supported Platforms:: Ascend GPU CPU

Examples

>>> input_x = Tensor(np.array([1, 2, 3, 4, 5]), mindspore.float32)
>>> tanh = ops.Tanh()
>>> output = tanh(input_x)
>>> print(output)
[0.7615941 0.9640276 0.9950547 0.9993293 0.9999092]