title: Scala strictfp annotation causes ClassFormatError
body: <p>I'm writing a multiplayer game in Scala where the floating-point computations have to happen in exactly the same way on every computer, so I tried adding the <code>@strictfp</code> annotation to every class, object, and trait. However, when I try to run the code I get errors like this one: <code>java.lang.ClassFormatError: Method handleKeyPress in class com/nathanstoddard/common/renderer2d/InputHandler has illegal modifiers: 0xC01</code>. If I remove the <code>@strictfp</code> annotation from that class, it gives a similar error message for a different method in a different class.</p>
  
  <p>What does this error message mean, and how do I fix it? Is it a bug in my code or in the Scala compiler?</p>
  
  <p>I've tried using the <code>@strictfp</code> tag in smaller applications, and so far I've been unable to reproduce this crash with anything but my large project.</p>
  
  <p>Also, is there a way to enable strictfp globally, so I don't have to add it to every class?</p>
  
  <p>I'm using Scala 2.10.3 on Windows 7, and Java 1.7.0_10 (64-bit), and I'm running my program with sbt 0.12.2.</p>