title: Xcode [NSString floatValue] Rounding Problem
body: <p>Hi I've a problem with NSString floatValue function, if user insert more than six decimal number floatValue function Round data.</p>
  
  <pre><code>NSString *String = @"9.999999";
  NSLog(@"Var Float: %f",[String floatValue]);
  </code></pre>
  
  <p>Result 9.999999</p>
  
  <pre><code>NSString *String = @"9.9999999";
  NSLog(@"Var Float: %f",[String floatValue]);
  </code></pre>
  
  <p>Result 10 ??????</p>
  
  <p>Someone can help me to solve it?
  Thanks in advance!</p>