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Rob Finch
 Post subject: random number generation
PostPosted: Fri Jan 03, 2003 5:07 am 
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Joined: Sun Dec 29, 2002 8:56 pm
Posts: 449
Location: Canada
hi,

I was just wondering how random numbers are generated ? I am using EnhBASIC to display patterns on a text screen but the patterns don't seem very random. I'm wondering if this is a problem with hardware or is it a built in feature of EnhBASIC ?
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leeeeee
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PostPosted: Fri Jan 03, 2003 11:59 pm 
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Joined: Fri Aug 30, 2002 2:05 pm
Posts: 347
Location: UK
Hi Rob,

The RND() function in EhBASIC uses a 31 bit maximal length PRNG.

I chose this for two reasons - speed, and it ensures all the values
will eventually be produced.

If you want a more random seeming sequence then use every nth
value (where n is a suitable large prime number). EhBASIC68k
uses every 5th value to this end.

Lee.
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