Math errors in Lua Player for Windows and crashes PSP

[WinBear]

I've been working on a Lua Player game. I'm requiring compatibility with the Microsoft random number generator/seed code, which I have. This particular code depends on the behavior of "long integers" wrapping when exceeding the capacity of 32 bit numbers. Lua Player uses floating point and I read some of the arguments about that. I'm fairly confident I can work around that feature and make the numbers behave the same way. However, Lua Player for Windows introduces a rounding error which I cannot work around.

Here's what I'm seeing:

Using the following formula
x = 2745024 * 214013 + 2531011

Lua Player for Windows gives a result of x = 587473354752
Windows Calculator says the result should be x = 587473352323
The difference of 2429 looks a little odd until you see the differences in hexadecimal.

In Lua Player for Windows, x = 0x88C8240000
In Calculator for Windows, x = 0x88C823F683

It's rounding up by 2 to the 16th power.

I went to try this on the PSP and Lua Player for the PSP completely crashes trying to do the math calculation, shutting down the PSP after about 10 seconds.

[romero126]

0/0 also crashes it