dsimcha wrote:
== Quote from bearophile ([email protected])'s article
Andrei Alexandrescu:
Should we yank operator>>>?
We can change it purpose and add the other one:
<<< rotate left
rotate right
Bye,
bearophile
This is a good idea, although rotate may be seldom enough used not to warrant
its
own (possibly overloadable) operator. std.intrinsic might be a better place for
rotate. On the other hand, rotate is a single ASM instruction, at least on x86.
In a close to the metal language, there needs to be a straightforward, efficient
way to access it.
I think DMD should just do what gcc does: recognize that
(x << 32-n | x>>n) is ror n
(x << n | x>> 32-n) is rol n
where x is int. Ugly, but doesn't require an intrinsic.
