Author: Uri Blass
Date: 07:23:10 05/25/02
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On May 25, 2002 at 10:03:02, Daniel Clausen wrote: >On May 25, 2002 at 09:50:27, Vincent Diepeveen wrote: > >>On May 25, 2002 at 09:32:58, Russell Reagan wrote: >> >>A few rude things can be done pretty quick with bitboards >>at 64 bits processors, which is what Bob aimed at a year >>or 10 ago, >>but as soon as you want to evaluate things in detail, then >>please remember what bitboards are: they provide 1 bit of >>info a bitboard about a square. That's very little info. >> > >Nothing prevents a bitboard-based program to use non-bitboard things as well. Eg >I use a simple array 'piece_t square[64]' _additionally_ to all the bitboards, >since it's much faster to use this when you have to find out what piece is on a >certain square. Other bitboard-based programs probably also have this or similar >information stored additionally to the many bitboards. > >Similarly, nothing prevents non-bitboard programs to use bitboards for certain >things. E.g. (Hi Roy! :) using a bitboard for all pawns is quite common, AFAIK. > >Sargon What is the meaning of a bitboard program. How can you say if a program is a bitboard-based program that uses non bitboard or a non bitboard program that uses bitboards. Uri
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