realToFrac vs. fromRealFrac

I am not sure whether the following issue has already been mentioned earlier. Chapter 6 ``Predefined Types and Classes'' of The Report says at its very end, Also available are the following coercion functions: fromIntegral :: (Integral a, Num b) => a -> b fromRealFrac :: (RealFrac a, Fractional b) => a -> b (`fromRealFrac' is also defined in Figure 7.) However, in Appendix A ``Standard Prelude'', we have realToFrac :: (Real a, Fractional b) => a -> b realToFrac = fromRational . toRational instead of a definition for `fromRealFrac'. Both GHC and Hugs go by Appendix A. What was the original intention? Cheers, Manuel