# Atanh¶

Versioned name : Atanh-3

Category : Arithmetic unary

Short description : Atanh performs element-wise hyperbolic inverse tangent (arctangenth) operation with a given tensor.

Detailed description : Atanh performs element-wise hyperbolic inverse tangent (arctangenth) operation on a given input tensor, based on the following mathematical formula:

Float type input:

$a_{i} = atanh(a_{i})$

Signed Intragral type put:

$a_{i} = (i <= -1) ? std::numeric_limits<T>::min() : (i >= 1) ? std::numeric_limits<T>::max() : atanh(a_{i})$

Unsigned Intragral type put:

$a_{i} = (i > 0) ? std::numeric_limits<T>::max() : atanh(a_{i})$

Attributes : Atanh operation has no attributes.

Inputs

• 1 : A tensor of type T. Required.

Outputs

• 1 : The result of element-wise atanh operation applied to the input tensor. A tensor of type T and the same shape as input tensor.

Types

• T : any supported numeric type.

Examples

<layer ... type="Atanh">
<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>