title: EL any function to get absolute value of a number?
body: <p>I know the ugly way</p>
  
  <pre><code>a&gt;0 ? a : -a
  </code></pre>
  
  <p>but this is very annoyng when a is a relatively long expression.</p>
  
  <pre><code>OBJ1["x"]-someVar&gt;0 ? OBJ1["x"]-someVar : -(OBJ1["x"]-someVar)
  </code></pre>
  
  <p>Is there any nicer way of doing it?</p>