# Utility Functions Requirements

## Overview
This document outlines the requirements for the utility functions to be implemented in the project.

## Function 1: `calculate_sum`
### Description
Calculates the sum of two numbers.
### Input Parameters
- `num1` (float): The first number.
- `num2` (float): The second number.
### Expected Output
- (float): The sum of `num1` and `num2`.

## Function 2: `is_even`
### Description
Determines if a given number is even.
### Input Parameters
- `number` (int): The number to check.
### Expected Output
- (bool): Returns `true` if the number is even, `false` otherwise.

## Function 3: `string_to_upper`
### Description
Converts a given string to uppercase.
### Input Parameters
- `input_string` (str): The string to convert.
### Expected Output
- (str): The uppercase version of `input_string`.

## Function 4: `get_unique_elements`
### Description
Returns a list of unique elements from the input list.
### Input Parameters
- `input_list` (list): The list from which to extract unique elements.
### Expected Output
- (list): A list containing unique elements from `input_list`.