int64 issue

[JohnWIlling]

Trying to do some math with 64 bit and noticed math was not coming out right.

Local $tDec = DllStructCreate("int64 num")
$tDec.num = 0xDEADBEDDEADBED
ConsoleWrite('Before:' & $tDec.num & @CRLF);
$tDec.num = $tDec.num / 1
ConsoleWrite(' After:' & $tDec.num & @CRLF);

This is generating:

Before:62678480108313581
 After:62678480108313585

Am I missing something?  

If I replace the divide ("/") with Multiply ("*") it works but the divides do not.  

If I divide by 2, I get:

Local $tDec = DllStructCreate("int64 num")
$tDec.num = 0xDEADBEDDEADBED
ConsoleWrite('Before:' & $tDec.num & @CRLF);
$tDec.num = $tDec.num / 2
ConsoleWrite(' After:' & $tDec.num & @CRLF);

Before:62678480108313581
 After:31339240054156793

But the number should be: 31339240054156790

Running with 32 bit AutoIT 3.3.14.2

[jchd]

In AutoIt / always yields a floating-point value, hence inexact. This modified code demonstrates this:

Local $iDec = 0xDEADBEDDEADBED
ConsoleWrite('Before:' & $iDec & @CRLF);
$iDec = $iDec / 1
ConsoleWrite(' After:' & $iDec & @CRLF);

There is unfortunately no integer divide built in.

[JohnWIlling]

So is there another method to do this?  Do you know of a routine in msvcrt.dll or KERNEL.dll that can do division with longs?