Welcome
Reference Guide
This guide describes conceptual information about data design environment components when you want to use the data fabrication feature in HCL OneTest™ Server.
Schema design
A schema is a graphical data dictionary that contains metadata definitions of the structure of a document to generate test data. Schema provides visual cues for understanding the structure and complete definition of an object.
Functions and expressions
Math and statistics functions
ATAN
The ATAN function calculates the arctangent of a value.

Release Notes
This document includes information about What’s new, installation and upgrade instructions, known issues, and contact information of HCL Customer Support.
System Requirements
This document includes information about hardware and software requirements for HCL OneTest™ Server.
Getting Started Guide
This guide provides an overview of HCL OneTest™ Server. You can find the task flows to get you started with HCL OneTest Server. This guide is intended for new users.
Administrator Guide
This guide describes how to install the HCL OneTest™ Server software.
Test Author Guide
This guide describes how to create test assets in HCL OneTest™ Server and publish test assets to the Git repository that you have configured. You can also edit existing test assets that are in the repository added to your project. This guide is intended for testers and test managers.
Test Execution Specialist Guide
This guide describes tasks that you must complete before you can configure and run tests in HCL OneTest™ Server. You can find information about configuring runs for the different test types that are supported. You can also find information about other tasks that you can perform on the Resource Monitoring Service, Virtualization, and Integrations with third-party applications. This guide is intended for testers or test execution specialists.
Test Manager Guide
This guide describes how to manage and track your overall test effort. This guide is intended for test managers.
Reference Guide
This guide describes conceptual information about data design environment components when you want to use the data fabrication feature in HCL OneTest™ Server.
- Files
  You add a file to a project to use it as input in the project. You can upload a file from your local file system to a project from the Files tab to generate test data. Alternatively, you can upload it when you define an action.
- Connections
  A connection defines the properties that are required to connect to an external resource. An action uses a connection to provide source data to a project or write data from a source to a target. Multiple actions can use the same connection. You can define both connections and actions at the project level.
- Schema design
  A schema is a graphical data dictionary that contains metadata definitions of the structure of a document to generate test data. Schema provides visual cues for understanding the structure and complete definition of an object.
  - Introduction to schema design
    Use the Schemas tab to define, modify, and view schemas. A schema describes the syntax, structure, and semantics of your data.
  - Type properties
    The properties of a type define the characteristics of the data objects of that type.
  - Item restrictions
    Item restrictions are an optional feature you can use to specify valid or invalid data objects for an item type. Item restrictions are grouped into three categories: Value, Character, and Range.
  - Components
  - Partitioning
  - Type inheritance
  - Schema analyzer
  - Distinguishable objects
  - Functions and expressions
    - Expressions and evaluations
    - Using functions
    - Syntax of a function
    - Function argument syntax
    - Functions that convert character-set encoding to the native code page
    - General functions
    - Bidirectional functions
    - Bit manipulation and testing functions
    - Conversion functions
    - Date/time functions
    - Error handling functions
    - External interface functions
    - Inspection functions
    - Logical functions
    - Lookup and reference functions
    - Math and statistics functions
      - ABS
      - ACOSINE
        Use the ACOSINE function to calculate the arccosine of a value.
      - ASIN
        Use the ASIN function to calculate the arcsine of a value.
      - ATAN
        The ATAN function calculates the arctangent of a value.
      - ATAN2
        The ATAN2 function calculates the arctangent of y,x.
      - COSINE
        The COSINE function calculates the cosine of a value.
      - COSINEH
        The COSINEH function calculates the hyperbolic cosine of a value.
      - COUNT
      - COUNTABS
      - EXP
        The EXP function calculates the exponential of a value.
      - FACTORIAL
        The FACTORIAL function calculates the factorial of a value.
      - FROMBASETEN
      - INT
      - LOG
        The LOG function calculates the logarithms of a value.
      - LOG10
        The LOG10 function calculates the logarithms for base 10 of a value.
      - MAX
      - MIN
      - MOD
      - POWER
        The POWER function calculates x raised to the power of y.
      - RAND
        The RAND function returns a pseudorandom number.
      - ROUND
      - SEED
        The SEED function primes the RAND and RANDDATA functions so they produce repeated results.
      - SIN
        The SIN function calculates the sine of a value.
      - SINH
        The SINH function calculates the hyperbolic sine of a value.
      - SQRT
      - SUM
      - TAN
        The TAN function calculates the tangent of a value.
      - TANH
        The TANH function calculates the hyperbolic tangent of a value.
      - TOBASETEN
      - TRUNCATE
    - Text functions
    - XML functions
    - Custom functions
    - Date and time format strings
    - Number format strings
    - RUN function return codes
    - Character set codes for CPACKAGE, CSERIESTOTEXT, and CTEXT
Troubleshooting
This guide describes how to analyze and resolve some of the common problems that you might encounter while you work with HCL OneTest™ Server.
All Guides (PDF)
You can find the link to view or download the content of the release notes, system requirements, and persona guides of HCL OneTest™ Server as a PDF file.
Security Considerations
This document describes the actions that you can take to ensure that your installation is secure, customize your security settings, and set up user access controls.
Notices
This document provides information about copyright, trademarks, terms and conditions for the product documentation.

ATAN

The ATAN function calculates the arctangent of a value.

Syntax:: mathlib->ATAN (single-number-expression)
Meaning:: mathlib->ATAN (number_to_convert)
Returns:: A single number item