title: NSNumber to float Value
body: <p>When I convert <code>NSNumber</code> to float value using 'floatValue', there is a difference in precision. Example, I have a <code>NSNumber</code> 'myNumber' having value 2.3, and if I convert myNumber to float using 'floatValue', its value becomes, 2.29999. But I need exactly 2.30000. There is no problem with number of zeros after 2.3, I need '2.3' instead of '2.9'.</p>
  
  <p>How can I do so?</p>