openvino/docs/ops/arithmetic/Tanh_1.md

# Tanh {#openvino_docs_ops_arithmetic_Tanh_1}

**Versioned name**: *Tanh-1*

**Category**: *Arithmetic unary*

**Short description**: *Tanh* performs element-wise hyperbolic tangent (tanh) operation with given tensor.

**Detailed description**

For each element from the input tensor calculates corresponding element in the output tensor with the following formula:
\f[
tanh ( x ) = \frac{2}{1+e^{-2x}} - 1 = 2sigmoid(2x) - 1
\f]

* For integer element type the result is rounded (half up) to the nearest integer value.

**Attributes**: *Tanh* operation has no attributes.

**Inputs**:

* **1**: A tensor of type *T* and arbitrary shape. **Required.**

**Outputs**:

* **1**: The result of element-wise *Tanh* operation. A tensor of type *T* and the same shape as input tensor.
**Types**

* *T*: any numeric type.


**Examples**

*Example 1*

```xml
<layer ... type="Tanh">
    <input>
        <port id="0">
            <dim>256</dim>
            <dim>56</dim>
        </port>
    </input>
    <output>
        <port id="1">
            <dim>256</dim>
            <dim>56</dim>
        </port>
    </output>
</layer>
```