Bitwise operations

gmadarm · 2014-07-14T20:56:41+00:00

with set_timeout() set to 2000 and chunk size of 32KB there is no more issue.ThanksLe lundi 14 juillet 2014 14:14:26 UTC+2, Jerome Lafon a écrit :H...

Bitwise operations

gmadarm

How can I run bitwise operations in Openresty? AFAIK, luajit supports the bit32 table, yet the following code does not work:

str = "8.8.8.8"
o1,o2,o3,o4 = str:match("(%d%d?%d?)%.(%d%d?%d?)%.(%d%d?%d?)%.(%d%d?%d?)" )
num = 2^24*o1 + 2^16*o2 + 2^8*o3 + o4

for i=1,32 do
ngx.say(ngx.ERR, bit32.lrotate(bit32.arshift(num, i),i))
end

The error message is:
attempt to index global 'bit32' (a nil value)

thanks
- G

manchev

On Mon, 14 Jul 2014 05:56:41 -0700 (PDT)
Gordon Madarm <gma...@gmail.com> wrote:

> How can I run bitwise operations in Openresty? AFAIK, luajit supports
> the bit32 table, yet the following code does not work:
> 
> str = "8.8.8.8"
> o1,o2,o3,o4 =
> str:match("(%d%d?%d?)%.(%d%d?%d?)%.(%d%d?%d?)%.(%d%d?%d?)" ) num =
> 2^24*o1 + 2^16*o2 + 2^8*o3 + o4
> 
> for i=1,32 do
>     ngx.say(ngx.ERR, bit32.lrotate(bit32.arshift(num, i),i))
> end
> 
> The error message is: 
> attempt to index global 'bit32' (a nil value)
> 
> thanks
> - G
> 

Maybe take a look at this - http://bitop.luajit.org/api.html


Best,
Vladislav