Good point On Tue, Mar 19, 2019 at 6:15 AM roger peppe <rogpe...@gmail.com> wrote:
> On Tue, 19 Mar 2019 at 07:32, Michael Jones <michael.jo...@gmail.com> > wrote: > >> Ok, at my computer now so time for a longer answer. >> >> What you want is this: >> https://play.golang.org/p/QirBtj523Wu >> > > I think that's wrong too, as the byte slices might not be word aligned, so > on some architectures, that code will panic due to unaligned access. To do > it right, you'd need to do the word arithmetic only on the aligned parts of > the slice (and only if all the slices are equally aligned), and use > bytewise arithmetic on the unaligned > start and end bytes. > > The original also used loop unrolling which could speed things up quite a > bit, but adds complexity. Using uintptr rather than uint64 is likewise > probably faster on non-64-bit architectures. > -- *Michael T. jonesmichael.jo...@gmail.com <michael.jo...@gmail.com>* -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
