Class: RandomBlumBlumShub

• Inheritance
• Description
• Class protocol
  • instance creation
• Instance protocol
  • initialization
  • random numbers

Inheritance:

   Object
   |
   +--RandomBlumBlumShub

Package:

stx:libbasic2

Category:

Magnitude-Numbers-Random

Version:

rev: 1.6 date: 2021/01/20 13:06:38

user: cg

file: RandomBlumBlumShub.st directory: libbasic2

module: stx stc-classLibrary: libbasic2

Description:

NO WARRANTY

This generator uses the blum blub shub algorithm to generate random numbers.
It is very slow, but considered to provide good random numbers.

RandomBlumBlumShub new nextInteger

copyright
COPYRIGHT (c) 2014 Claus Gittinger
             All Rights Reserved

This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice.   This software may not
be provided or otherwise made available to, or used by, any
other person.  No title to or ownership of the software is
hereby transferred.

Class protocol:

 new

(comment from inherited method)
return an instance of myself without indexed variables

 new: seed

(comment from inherited method)
return an instance of myself with anInteger indexed variables

Instance protocol:

 initialize

The two primes, p and q, should both be congruent to 3 (mod 4)

Usage example(s):

self new initialize

 seed: seedArg

isCoprimeWith:

 nextBoolean

generates the next random boolean

 nextInteger

generates the next integer in 0..FFFFFFFF

Usage example(s):

self new nextInteger. |r| r := self new 100 timesRepeat:[ Transcript showCR:r nextInteger].