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From: Mats.Weber@elca-matrix.ch (Mats Weber)
Subject: Re: Random Number Generation
Date: 1996/10/03
Message-ID: <Mats.Weber-0310961944550001@mlma27.elca-matrix.ch>#1/1
X-Deja-AN: 187007337
references: <52uaj7$e9s@newton.cc.rl.ac.uk>
organization: ELCA Matrix SA
newsgroups: comp.lang.ada
Date: 1996-10-03T00:00:00+00:00
List-Id: <comp.lang.ada>


>Suppose you have a high quality random number generator R1 in the range
>0 .. 1023
>and you want to turn it into a high quality random number generator R2
>in the range 0 .. 2.

[...]

The problem here is that you rarely have a high quality generator on all
bits of the result. Generators usually are high quality on their most
significant bits, and it is very important to use the leftmost bits of the
original generator during the range reduction.