Re: Am I misunderstanding random numbers?

[Roberto Ierusalimschy <roberto@...>]

> When I run the following snippet, I get unexpected results.  About
> 50% of the results are the same (I've omitted the different ones
> from my results list, because they're not as interesting :-)
> 
> 
> math.randomseed( __randomSeed )
> print ("Seed: ".. __randomSeed, math.random(10000),math.random(10000),math.random(10000),math.random(10000))
> 
> =====
> 
> Seed: 3063121584        12      2356    6482    744
> Seed: 2428144928        12      2356    6482    744
> Seed: 3559301251        12      2356    6482    744
> Seed: 4287790062        12      2356    6482    744
> Seed: 2737803158        12      2356    6482    744
> Seed: 2458923424        12      2356    6482    744


I think all these seeds are larger than INTMAX, so they are being
truncated to 0x80000000 (or something similar).

This is probably a bug in Lua, since srand should accept unsigned
ints.

-- Roberto