---
title: "Create NaN (Double)"
slug: "create-nan-double"
updated: 2023-11-22T13:42:05Z
published: 2023-11-22T13:42:05Z
canonical: "documentation.decisions.com/create-nan-double"
---

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# Create NaN (Double)

| Step Details |
| --- |
| **Introduced in Version** | 8.17 |
| **Last Modified in Version** | -- |
| **Location** | Data > Text > Numbers |

NaN serves as a way to indicate that a numerical result is undefined or cannot be expressed as a real number.

The [Create NaN](/step-library/docs/create-nan-double) Rule step is used to create a NaN (Not a Number) within the workflow. This step is used in conjunction with the [IsNaN](https://learn.microsoft.com/en-us/dotnet/api/system.double.isnan?view=net-8.0) step.

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## Properties

#### Outputs

| Property | Description | Data Type |
| --- | --- | --- |
| Output | Outputs a constant NaN field | Double |

![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1700658719519.png)

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Related Information:

[IsNaN](/step-library/docs/isnan-double)