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Subject: Re: CM8000: Known bugs reported by users

Author: John Merlino

Date: 18:19:43 11/21/00

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On November 21, 2000 at 21:04:55, Dave Gomboc wrote:

>>-- Of course, two users have reported that the program fails to run AT ALL on
>>Windows 2000. They, sadly, are told that the program does not officially support
>>Windows 2000 and that their best bet is to return it. It is unknown what is
>>causing this problem.
>
>Ugh.
>
>>-- Fixed a bug that would cause the "Positions" columns in the Thinking Lines
>>window to display incorrectly after approximately 2.1 billion positions had been
>>seen. These columns will now "wrap" their values (i.e. display incorrect data)
>>after approximately 4.2 billion positions, but this is unavoidable. On a typical
>>machine (Pentium III - 600 Mhz, for example) this will not occur until 30 or
>>more hours have passed, given a typical midgame position.
>
>Doesn't the compiler being used have any support for 64-bit integers?  Some of
>us freaks occasionally set up a position and let the computer crank for days! ;)
>
>Dave

Yes, but the data that is being received from the engines is getting converted
in such a way that 64-bit integers is not feasible. Nor are 64-bit integers in
common usage, nor are they very fast to work with.

Also, it should be noted that, in the case of XBoard engines, the data that is
being displayed in the GUI is exactly what the engine is giving it. So if the
engine itself doesn't support 64-bit integers....

jm



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