9 Sep
2002
9 Sep
'02
5:01 a.m.
I have just been implementing the library module `Data.Bits' for nhc98, as part of an effort to bring that compiler up-to-date with the latest FFI spec.
The FFI spec says that the operations called 'shift' and 'rotate', shift and rotate their argument to the right. However, the GHC implementation in CVS shifts and rotates to the left, and is documented to do so.
Who is right? FWIW, before I read any documentation I expected the undecorated forms to be rightward.
I think it's probably a mistake in the FFI addendum. As far as I can tell, the GHC/Hugs implementation of Bits has always worked the other way around. Cheers, Simon