Re: Bitwise XOR in Lua?

["Benjamin Esham" <bdesham@...>]

* Reuben Thomas <rrt@sc3d.org>:

>> Thanks!  However, it would be ideal if I didn't have to (re)compile
>> anything, as the code that uses the function needs to be portable, and
>> some of the target platforms don't have compilers available.  Is there a
>> way to implement it in "pure" Lua?
>
> How do you get Lua on the machines without a compiler?

I'm using tomsrtbt [ http://www.toms.net/rb ], which is a "floppy" Linux
distribution.  Things compiled to run on it must be staticlly linked, which
my linker doesn't support.

> You can implement XOR in pure Lua but it's very slow. Probably the easiest
> way is to do it bit by bit, but maybe there's a clever trick to do it
> faster with whole-word arithmetic.

Slow isn't really an issue; I just need the ability to XOR in Lua.

-- 
Benjamin D. Esham      {      http://bdesham.net
bdesham@iname.com      }      AIM: s c e s a r 1
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