pokersource - Bugs: bug #9364, small bias in monte carlo card... [Gna!]

pokersource - Bugs: bug #9364, small bias in monte carlo card...

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bug #9364: small bias in monte carlo card selection

Submitted by:	Michael Maurer <mjmaurer>
Submitted on:	Mon 18 Jun 2007 06:06:35 PM UTC

Category:	poker-eval	Severity:	2 - Minor
Priority:	5 - Normal	Status:	Need Info
Privacy:	Public	Assigned to:	None
Open/Closed:	Open

Tue 23 Feb 2010 06:06:40 PM UTC, comment #1:

Does this still happens with latest version of poker-eval ?

Johan Euphrosine <proppy>
Project Member

Mon 18 Jun 2007 06:06:35 PM UTC, original submission:

Jeff Siegal reports:

I happened to be looking at the poker-eval package that is part of
fedora-extras and I noticed that the monte carlo macros have a small bug. (I'm not positive the bug exists in the upstream but I assume it does.)

There are statements such as:

_c = RANDOM() % deck##_N_CARDS;

in enumerate.h

This produces a biased result if the the range of random numbers is
not an even multiple of the number of cards.

Michael Maurer <mjmaurer>
Project Administrator