[RNG-111] Jenkins Small Fast generator

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Implemented
• Affects Version/s: 1.3
• Fix Version/s: 1.3
• Component/s: core
• Assignee: Alex Herbert
• Reporter: Alex Herbert
• Created: 06/Aug/19 12:59
• Updated: 11/Nov/19 14:25
• Resolved: 17/Sep/19 11:09

Description

Implement Bob Jenkins' Small/Fast Chaotic PRNG.

A small noncryptographic PRNG

Variants are provided for 32-bit and 64-bit output. The generators use bit shifts to avalanche state and many variants are provided for different shift combinations. However there is a recommended variant that has been more extensively tested. A seeding routine is provided to ensure that generators with short cycles are avoided.

This generator has no name but appears in PractRand as JSF (Jenkins Small Fast).