Author: Bas Hamstra
Date: 16:04:26 01/05/04
Go up one level in this thread
On January 05, 2004 at 16:39:04, Uri Blass wrote: >I see that crafty is using swap_list[32] and I think that the array is too long. > >There are only 8 queen directions and 8 knight directions and I think that for >practical cases swap_list[16] can make Crafty faster with no problems(in theory >it is possible that 16 is not enough but I do not imagine a practical case when >it can happen. > >I wonder if it is not better to have swap_list[16] in Crafty and add >if (nc==15) break if you want to be careful not to crash maybe in 1 out of 1000 >games. > >It seems to me that the price of allocating memory to 16 integer is higher than >the price of one if (nc==15) inside the loop. It doesn't matter, it is not a performance issue. Most of the ticks are in fetching the attacks/xrays and manipulating bitboards (and getting the last bit especially on AMD). Compared to that setting up 16 less chars is peanuts. Bas.
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