Absolute value isn't working
<p>My iPhone has a line of code that looks like this:</p>

<pre><code>double decimal2 = abs(newLocation.coordinate.longitude - degrees);
</code></pre>

<p>I'm trying to ensure that the value of decimal2 is always positive.  However, decimal2 is currently -82.</p>

<p>Can anyone explain this?  I'm not doing anything else to the value of decimal2.</p>

<p>Thanks.</p>
