On 18.10.2011 06:25, Robert Jacques wrote:
On Mon, 17 Oct 2011 16:53:42 -0400, Manu <turkey...@gmail.com> wrote:
[snip]
*Count leading/trailing zeroes:* I don't know of any even slightly recent
architecture that doesn't have opcodes to count loading/trailing zeroes,
although they do exist, so perhaps this is a little dubious. I'm sure
this
could be emulated for such architectures, but it might be unreasonably
slow
if used...
D has this: check out std.intrinsic's bsr and bsl.
You mean bsr and bsf.
Unfortunately, there are some big problems with them. What is bsr(0) ?
