title: Difference between min and fmin
body: <p>I have two <code>CGFloats</code>. Is there any difference between</p>
  
  <pre class="lang-swift prettyprint-override"><code>let a: CGFloat = ...
  let b: CGFloat = ...
  
  min(a, b)
  </code></pre>
  
  <p>and</p>
  
  <pre class="lang-swift prettyprint-override"><code>fmin(a, b)
  </code></pre>
  
  <p>?</p>