Re: [boost] Random numbers question

Subject: Re: [boost] Random numbers question
From: Anant Rao (arao_at_[hidden])
Date: 2009-07-24 21:44:17

Thanks Steven!
I found the issue - I was using boost 1.38 (which I incorrectly stated in my prev email that it was 1.39). I changed it to 1.39 and all's fine.

Thanks again.

-----Original Message-----
From: boost-bounces_at_[hidden] [mailto:boost-bounces_at_[hidden]] On Behalf Of Steven Watanabe
Sent: Friday, July 24, 2009 4:40 PM
To: boost_at_[hidden]
Subject: Re: [boost] Random numbers question

AMDG

Anant Rao wrote:
> I'm using Mersenne Twister algo to generate random numbers on Windows and Linux using the same code. Boost ver 1.39.
>
> Here's the simple code I have:
>
> boost::mt19937 rng(43);
> boost::uniform_01<boost::mt19937>  zeroone(rng);
>
> float randomNumber = zeroone();
>
>
> If I run it multiple times, I get the same result on the same OS, as expected. However, the random numebrs are different between Windows and Linux.
>
> Is this the expected behavior? Is there anything I can do to get the same random numbers on Windowd and Linux?
>   

Can you post complete code along with the output.
I get the same results from msvc and gcc from this program.

#include <boost/random/uniform_01.hpp>
#include <boost/random/mersenne_twister.hpp>

int main() {
    boost::mt19937 rng(43);
    boost::uniform_01<boost::mt19937>  zeroone(rng);

    for(int i = 0; i < 10; ++i) {
        float randomNumber = zeroone();
        std::cout << randomNumber << std::endl;
    }
}

0.115055
0.496861
0.609067
0.102915
0.133391
0.148773
0.24059
0.172133
0.327139
0.811036

In Christ,
Steven Watanabe

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