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base:16bit_xorshift_random_generator

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base:16bit_xorshift_random_generator [2019-05-10 02:45] vsariolabase:16bit_xorshift_random_generator [2019-05-10 21:43] vsariola
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   * ported by: Veikko Sariola   * ported by: Veikko Sariola
  
-Xorshift is a fast pseudorandom generator algorithm originally developed by [[https://www.jstatsoft.org/article/view/v008i14|George Marsaglia]]. [[http://www.retroprogramming.com/2017/07/xorshift-pseudorandom-numbers-in-z80.html|John Metcalf]] found a 16-bit version of the algorithm that is fast on 8-bit platforms with only single bit shifts available. It has a period of 65535 and passes reasonable tests for randomness, unlike most of the LFSRs on this site. His pseudocode is reprinted here:+Xorshift is a fast pseudorandom generator algorithm originally developed by [[https://www.jstatsoft.org/article/view/v008i14|George Marsaglia]]. [[http://www.retroprogramming.com/2017/07/xorshift-pseudorandom-numbers-in-z80.html|John Metcalf]] found a 16-bit version of the algorithm that is fast on 8-bit platforms with only single bit shifts available. It has a period of 65535 and passes reasonable tests for randomness. His pseudocode is reprinted here:
  
 <code c> <code c>
base/16bit_xorshift_random_generator.txt · Last modified: 2019-08-12 15:41 by ftc