Author: Zach Wegner
Date: 22:56:09 05/25/03
Go up one level in this thread
>BITBOARD Mask (int i) {
> return (BITBOARD)1 << i;
>}
Here lies your problem. In crafty, you will see:
# define MaskL(a) (((unsigned long)(-1L))<<(a))
...
# define mask_1 MaskL(63)
..
for (i=0;i<64;i++){
...
SetMask(i)=mask_1>>i;
...
}
Your masks are reversed.
P.S. Crafty already has a function to display bitboards.
in utility.c:
void DisplayBitBoard(BITBOARD board) {
int i,j,x;
for(i=7;i>=0;i--) {
printf(" %2d ",i*8);
x=board&255;
board>>=8;
for(j=128;j>0;j=j>>1)
if(x & j)
printf("X ");
else
printf("- ");
printf("\n");
}
}
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