code: public static void different(double a, double b)
      {
          if (Double.compare(a, b) == 0)
          {
              throw new LionEngineException(ERROR_ARGUMENT + String.valueOf(a) + ERROR_DIFFERENT + String.valueOf(b));
          }
      }
docs: Check if <code>a</code> is different to <code>b</code>.
  
  @param a The parameter to test.
  @param b The parameter to compare to.
  @throws LionEngineException If check failed.