BitAnd with unsigned 32 bit integers

[fspafford]

I am having problems with the Bit*** functions because they work with signed integers and I need to work with unsigned integers. Is there a recommended workaround for this problem?

[weaponx]

Can you give me an example of expected versus actual result?

[TerarinK]

Because a signed value to a integer run from -2,147,483,648 to 2,147,483,647 in a 32 bit system and unsigned value run from 0 to 4,294,967,295 in a 32 bit system. There a multiple way to add on to bit, I would search "Inifinite Bits" in a search engine to get your information as it would be just as easy to inplement them in here

[PsaltyDS]

I am having problems with the Bit*** functions because they work with signed integers and I need to work with unsigned integers. Is there a recommended workaround for this problem?

"Signed" and "unsigned" do not mean anything to the Bit* functions. It only changes the way they are displayed in decimal. As long as you are doing either bit operations with Bit* (or maybe some Binary*) functions, and not mixing that with math or String* operations, you will be fine:

$binVar = 0x7FFFFFFF
ConsoleWrite("$binVar = " & $binVar & @LF)
ConsoleWrite("Hex = " & "0x" & Hex($binVar, 8) & @LF)
$binVar = BitOR(0x80000000, $binVar)
ConsoleWrite("$binVar = " & $binVar & @LF)
ConsoleWrite("Hex = " & "0x" & Hex($binVar, 8) & @LF)
$binVar = BitAND(0xF0F0F0F0, $binVar)
ConsoleWrite("$binVar = " & $binVar & @LF)
ConsoleWrite("Hex = " & "0x" & Hex($binVar, 8) & @LF)
$binVar = BitXOR(0xFFFFFFFF, $binVar)
ConsoleWrite("$binVar = " & $binVar & @LF)
ConsoleWrite("Hex = " & "0x" & Hex($binVar, 8) & @LF)

[Richard Robertson]

Is the problem perhaps that AutoIt uses an internal 64 bit integer? Most people try to operate on the 32 bit boundary and only expect it to run those 32.

Edited February 3, 2009 by Richard Robertson