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Subject: Re: Basic bitboard representation in C (shifting)

Author: Michael Diosi

Date: 10:38:34 01/06/06

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On January 06, 2006 at 12:49:25, frogMeSebastian wrote:

>Hello all
>
>I have read a lot about the idea of bitboards and its use in chess programming,
>I fail, however, to get the idea of how to implement it in C.
>
>I have got something like this:
>  unsigned long long int bb_WhitePawns
>
>Now let's say there is one single Pawn on A1. If I simply do
>  bb_WhitePawns = 1000..0 (63 0)
>Then
>  printf(" %i", bb_WhitePawns >> 1);
>would not return '0100..00' but some nonsense integer value.
>
>It seems to me that the compiler does not interprete the value as a 64-bit-word.
>What am I doing wrong?


Hi,

Why would you like a white pawn on a1 ?

Best,

Michael




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