Author: Robert Hyatt
Date: 11:57:02 01/17/06
Go up one level in this thread
On January 17, 2006 at 06:36:20, JW de Kort wrote: >On January 16, 2006 at 20:13:19, Robert Hyatt wrote: > >>On January 16, 2006 at 16:16:13, JW de Kort wrote: >> >>>Hi all, >>> >>>In my engine i want to use the following line: >>> >>> !(bfZwart[kol+1]&bfBoven[rij]) >>> >>>In only a few cases this lines crashes my engine. If i change the +1 to any >>>other value there is no problem! >>> >>>Does anybody know were i have to look for to solve this problem? I do not >>>understand how a comparison like the above can cause a program to crash. >>> >>>regards >>>Jan Willem >> >>also "&" is the bitwise AND operator I assume you understand? So you are ANDing >>two values, and the result should be zero to satisfy that condition... >> >>How are bfZwart and bfBoven declared??? > >That is correct. > > >unsigned char bfZwart [10] >bfBoven unsigned char [8] > >This code is part of the passer detection routine. I can't see any way it would crash so long as this is true: -1 <= kol < 9 that way kol+1 will be between 0 and 9 and perfectly legal Any other value and you are indexing out of the array on either end, which can be trouble.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.