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Code Issues Releases Wiki Activity

Better self-document init_zobrist()

Browse source 
No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2011-06-12 11:46:24 +01:00
parent 47959c56fd
commit b3a0b389d2
2 changed files with 9 additions and 8 deletions
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4
src/bitboard.cpp
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@ -212,8 +212,8 @@ void init_bitboards() {
{}, {}, {}, { 9, 7, -7, -9, 8, 1, -1, -8 } };
for (Color c = WHITE; c <= BLACK; c++)
for (Square s = SQ_A1; s <= SQ_H8; s++)
for (PieceType pt = PAWN; pt <= KING; pt++)
for (PieceType pt = PAWN; pt <= KING; pt++)
for (Square s = SQ_A1; s <= SQ_H8; s++)
for (int k = 0; steps[pt][k]; k++)
{
Square to = s + Square(c == WHITE ? steps[pt][k] : -steps[pt][k]);

13
src/position.cpp
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@ -1793,16 +1793,17 @@ bool Position::is_mate() const {
void Position::init_zobrist() {
int i,j, k;
RKISS rk;
for (i = 0; i < 2; i++) for (j = 0; j < 8; j++) for (k = 0; k < 64; k++)
zobrist[i][j][k] = rk.rand<Key>();
for (Color c = WHITE; c <= BLACK; c++)
for (PieceType pt = PAWN; pt <= KING; pt++)
for (Square s = SQ_A1; s <= SQ_H8; s++)
zobrist[c][pt][s] = rk.rand<Key>();
for (i = 0; i < 64; i++)
zobEp[i] = rk.rand<Key>();
for (Square s = SQ_A1; s <= SQ_H8; s++)
zobEp[s] = rk.rand<Key>();
for (i = 0; i < 16; i++)
for (int i = 0; i < 16; i++)
zobCastle[i] = rk.rand<Key>();
zobSideToMove = rk.rand<Key>();