title: Float comparation and show message
body: <p>I have a timer that counts the time of my audio.
  I would put a label text on the screen when you get a time:</p>
  
  <pre><code>- (void)updateTime:(NSTimer *)timer
  {
  
      currentLocation = audio.currentTime;
      [lblCurrentLocation setText:[NSString stringWithFormat:@"%.4f Sec",currentLocation]];
  
      if (currentLocation == 4.7404)
      {
          [lblMsg setText:@"Sound p 1"];
      }
  
  }
  </code></pre>
  
  <p>This IF  is to compare CurrentLocation with 4.7404 is not working. Does anyone have any idea?</p>
  
  <p>Thank you</p>