/// <summary>
/// Returns the position of the current <see cref="Int16" /> within the specified range, expressed as a percentage where zero
/// is equal to the lower boundary and one is equal to the upper boundary.
/// </summary>
/// <param name="target">
/// The current <see cref="Int16" />.
/// </param>
/// <param name="lowerBoundary">
/// The inclusive lower boundary of the range to evaluate.
/// </param>
/// <param name="upperBoundary">
/// The inclusive upper boundary of the range to evaluate.
/// </param>
/// <returns>
/// The position of the current <see cref="Int16" /> within the specified range.
/// </returns>
/// <exception cref="ArgumentOutOfRangeException">
/// The current value is less than <paramref name="lowerBoundary" /> -or- the current value is greater than
/// <paramref name="upperBoundary" /> -or- <paramref name="lowerBoundary" /> is greater than
/// <paramref name="upperBoundary" /> -or- <paramref name="upperBoundary" /> is equal to <paramref name="lowerBoundary" />.
/// </exception>
public static Double PositionInRange(this Int16 target, Int16 lowerBoundary, Int16 upperBoundary)
{
target = target.RejectIf().IsLessThan(lowerBoundary, nameof(lowerBoundary)).OrIf().IsGreaterThan(upperBoundary, nameof(upperBoundary));
lowerBoundary = lowerBoundary.RejectIf().IsGreaterThan(upperBoundary, nameof(lowerBoundary));
upperBoundary = upperBoundary.RejectIf().IsEqualToValue(lowerBoundary, nameof(upperBoundary));
return(Convert.ToDouble(target - lowerBoundary) / Convert.ToDouble(upperBoundary - lowerBoundary));
}