On Tue, 2015-09-08 at 21:01 +0300, ivan.khoronzhuk wrote: > Hi, Andreas > > On 07.09.15 14:43, Andreas Bießmann wrote: > > From: Heiko Schocher <h...@denx.de> > > > > introduce BIT() definition, used in at91_udc gadget > > driver. > > > > Signed-off-by: Heiko Schocher <h...@denx.de> > > [remove all other occurrences of BIT(x) definition] > > Signed-off-by: Andreas Bießmann <andreas.de...@googlemail.com> > > --- > > Full buildman is running > > > > .... > > > > > +#define BIT(nr) (1UL << (nr)) > > Why UL? Why not simply 1 << (nr)?
That would give the wrong result for nr == 31 if used as a 64-bit number, and would produce undefined behavior for nr >= 32 (though even with 1UL that would be undefined on 32-bit builds). > What if I need set ULL bit on 32-bit system? > Thanks for explanation. Yes, ULL would be better. -Scott _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
