# Sqrt¶

Versioned name : Sqrt-1

Category : Arithmetic unary operation

Short description : Square root element-wise operation.

Detailed description : Sqrt performs element-wise square root operation on a given input tensor a, as in the following mathematical formula, where o is the output tensor:

$o_{i} = \sqrt{a_{i}}$
• If the input value is negative, then the result is undefined.

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

Attributes : Sqrt operation has no attributes.

Inputs

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

Outputs

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

Types

• T : any numeric type.

Examples

Example 1

<layer ... type="Sqrt">
<input>
<port id="0">
<dim>4</dim> <!-- float input values: [4.0, 7.0, 9.0, 10.0] -->
</port>
</input>
<output>
<port id="1">
<dim>4</dim> <!-- float output values: [2.0, 2.6457512, 3.0, 3.1622777] -->
</port>
</output>
</layer>

Example 2

<layer ... type="Sqrt">
<input>
<port id="0">
<dim>4</dim> <!-- int input values: [4, 7, 9, 10] -->
</port>
</input>
<output>
<port id="1">
<dim>4</dim> <!-- int output values: [2, 3, 3, 3] -->
</port>
</output>
</layer>

Example 3

<layer ... type="Sqrt">
<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>