title: How would you round up or down a Float to nearest even numbered integer in Swift 3?
body: <p>I need a little help rounding up or down a float to the nearest even number in Swift.</p>
  
  <p>Eg: </p>
  
  <pre><code>32.86 would be closest to 32
  
  33.86 would be closest to 34
  </code></pre>