64-bit Random Number Generator

[Lexicon]

Hello;
Does anyone know a 64-bit integer generator for 32-bit machines that
use long long or __int64 etc ?

[Lionel B]

Re: 64-bit Random Number Generator

On Tue, 24 Jun 2008 04:32:42 -0700, Lexicon wrote:

Hello;
Does anyone know a 64-bit integer generator for 32-bit machines that use
long long or __int64 etc ?

You'll find a 64-bit version of the excellent (fast, very long period,
good statistical properties) Mersenne Twister generator at:

http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt64.html

The basic word type is `unsigned long long', so if that's 64-bit on your
system it'll work; otherwise change it to whatever 64-bit (unsigned) type
your compiler supports.

It's also C code, but you can easily C++-isfy it if you want.

Cheers,

--
Lionel B

[Juha Nieminen]

Re: 64-bit Random Number Generator

Lexicon wrote:

Hello;
Does anyone know a 64-bit integer generator for 32-bit machines that
use long long or __int64 etc ?

What's an integer generator?

[Lionel B]

Re: 64-bit Random Number Generator

On Tue, 24 Jun 2008 14:58:55 +0000, Juha Nieminen wrote:

Lexicon wrote:

>Hello;
>Does anyone know a 64-bit integer generator for 32-bit machines that
>use long long or __int64 etc ?

>
What's an integer generator?

Judging by the subject of the message, this would refer to a (pseudo-)
random number generator that generates integers (presumably uniformly)
random on a range of integers... as opposed, I guess, to a random number
generator that generates floating point numbers on a range of real
numbers.

--
Lionel B

[Lexicon]

Re: 64-bit Random Number Generator

On Jun 24, 6:09 pm, Lionel B <m...@privacy.n etwrote:

On Tue, 24 Jun 2008 14:58:55 +0000, Juha Nieminen wrote:

Lexicon wrote:

Hello;
Does anyone know a 64-bit integer generator for 32-bit machines that
use long long or __int64 etc ?

>

  What's an integer generator?

>
Judging by the subject of the message, this would refer to a (pseudo-)
random number generator that generates integers (presumably uniformly)
random on a range of integers... as opposed, I guess, to a random number
generator that generates floating point numbers on a range of real
numbers.
>
--
Lionel B

Yeah that was what i meant.
And Lionel, thank you very much for the Mersenne twister, i just
ported it to c++ and it works great.