Here's how I implemented the operator for ints:
(let [intmask (dec (bit-shift-left 1 32))]
(defmacro ushr [x n] `(int (bit-shift-right (bit-and ~intmask ~x)
~n
The (bit-and intmask x) expression effectively gives you the unsigned
equivalent of x. For bytes, use 255 instead of intmask.
That's a very elegant way of expressing it. Thanks for that tip Kevin.
-Patrick
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
Clojure group.
To post to this group, send email to clojure@googlegroups.com
To
On May 21, 2009, at 7:39 PM, CuppoJava wrote:
Hi everyone,
I'm just wondering where the equivalent of the operator is for
Clojure. I need it to do a divide-by-power-of-2 on unsigned bytes.
I could use this too.
—
Daniel Lyons
http://www.storytotell.org -- Tell It!
On Fri 22/05/09 03:39 , CuppoJava patrickli_2...@hotmail.com sent:
Hi everyone,
I'm just wondering where the equivalent of the
operator is forClojure. I need it to do a divide-by-power-of-2 on unsigned
bytes.
Java doesn't have this either. Its operator doesn't work properly on
Wow that's news to me...
I thought this was a fairly standard operator. I'm surprised that Java
doesn't have a correct version of it.
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
Clojure group.
To post to this
On Fri, May 22, 2009 at 5:17 PM, CuppoJava patrickli_2...@hotmail.com wrote:
Wow that's news to me...
I thought this was a fairly standard operator. I'm surprised that Java
doesn't have a correct version of it.
I think the problem is that Java does not have unsigned bytes (or
other integer
Like other mentioned in the thread, Java has neither the operator,
nor unsigned data types.
With that said, I think the function you are looking for is bit-shift-
right:
user (bit-shift-right 2r1110 1)
7
I hope this helps.
Vincent.
On May 21, 9:39 pm, CuppoJava patrickli_2...@hotmail.com
Hi everyone,
I'm just wondering where the equivalent of the operator is for
Clojure. I need it to do a divide-by-power-of-2 on unsigned bytes.
-Patrick
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
Clojure
