/// Adds two 32-bit signed integers.
///
/// # Arguments
///
/// * `a` - The first integer.
/// * `b` - The second integer.
///
/// # Returns
///
/// * The sum of `a` and `b`.
///
/// # Examples
///
/// ```
/// use parth10606_first_crate::utils::math;
///
/// let result = math::add(3, 5);
/// assert_eq!(result, 8);
/// ```