On Mon, Apr 19, 2010 at 03:02:05AM +0000, Christos Zoulas wrote: > In article <20100419021334.ga8...@britannica.bec.de>, > Joerg Sonnenberger <jo...@britannica.bec.de> wrote: > >On Sun, Apr 18, 2010 at 10:51:35AM +0000, Alan Barrett wrote: > >> Log Message: > >> Bitwise operations on signed types are well-defined if the values > >> happen to be positive, and indeed the values here were guaranteed > >> to be positive, but some compilers complained anyway, so convert > >> the bitwise operations to arithmetic operations. > > > >In that case use an explicit cast to the unsigned type. What you did is > >penalize the code for no good reason. > > Any compiler these days knows how to do these micro-optimizations.
For *unsigned* that is easy. For *signed* it is a lot harder. Joerg
