title: How do I get absolute value of NSCFNumber?
body: <p>I have a value coming from an API server. The server stores it as BigDecimal on Postgres. On the iOS side, the value is of type <code>__NSCFNumber</code>. How do I get the absolute value for <code>NSCFNumber</code>?</p>
  
  <p>My primary purpose is to further convert this number to a currency.</p>