j0kky

Does AutoIt care about endianness?

5 posts in this topic

#1 ·  Posted (edited)

Hi,

writing some code I noticed AutoIt processes binary values as Little Endian by default , it is good because my PC has an Intel processor.

But what about Big Endian processors? Does compiled executable change its behavior relying on where it is executed?

I can explain my question in other words:

$t = Binary(0x0001)
ConsoleWrite("Binary: " & $t & @CRLF)
ConsoleWrite("Int: " & Int($t) & @CRLF)

0x0001 is saved in memory to 0x0100 (followed by other not significant 0s) because I have a little endian processor.

Int($t) reads the binary value and processes it as little endian printing the correct value of 1 (0x0001).

Does Int($t) always produce 1 or if I compile this script in my machine, and then I try to run it on a Big Endian one, do it prints 256 (0x0100)?

Edited by j0kky

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Which platform do you know being big-endian and running AutoIt?


This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

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#4 ·  Posted (edited)

So your real-world problem is?

Edited by jchd

This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

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#5 ·  Posted (edited)

For me, real-world problems don't really regard Autoit.

It's a little hobby and I wrote each script/UDF for the community, I'm here just to speak about programming theory.

BTW the doubt started working with Network and Host Byte Order, I asked In the topic for endianness because I didn't know big Endian is so rare.

Edited by j0kky

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