From: Rick DeNatale <rick.denatale@...>
Date: 2007-05-23T04:54:14+09:00
Subject: Re: Uniform Random Number Generator

On 5/22/07, Roland Mai <roland.mai@gmail.com> wrote:
> I need a random number generator that generates random numbers with a
> uniform distribution.
>
> I am not sure what rand does in ruby and I can't seem to find it online
> either. My initial assumption is that it follows a uniform distribution, but
> I can't tell.
>
> Any ideas?
>

According to the source code for random.c, Ruby's implementation of
rand uses the Mersenne Twister MT19937 which according to:
http://en.wikipedia.org/wiki/Mersenne_twister has "a very high order
of dimensional equidistribution."

HTH

-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/