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-rw-r--r--src/engine/transposition_table.c44
1 files changed, 0 insertions, 44 deletions
diff --git a/src/engine/transposition_table.c b/src/engine/transposition_table.c
deleted file mode 100644
index 1afbc81..0000000
--- a/src/engine/transposition_table.c
+++ /dev/null
@@ -1,44 +0,0 @@
-#include "engine/transposition_table.h"
-
-void transposition_table_init() {
- for (int i = 0; i < PIECE_TYPE_COUNT; i++) {
- for (int j = 0; j < 64; j++) {
- zobrist_keys.piece[i][j] = random_u64();
- }
- }
- for (int i = 0; i < CASTLE_COUNT; i++) {
- zobrist_keys.castle[i] = random_u64();
- }
- for (int i = 0; i < TURN_COUNT; i++) {
- zobrist_keys.turn[i] = random_u64();
- }
- for (int i = 0; i < 64; i++) {
- zobrist_keys.en_passant[i] = random_u64();
- }
-}
-
-u64 zobrist_hash(position_t position) {
- u64 output = 0;
- for (int i = 0; i < 64; i++) {
- int piece_type = find_piece_on_square(&position, i);
- output ^= zobrist_keys.piece[piece_type][i];
- }
-
- if (position.castling & WHITE_SHORT_CASTLE) {
- output ^= zobrist_keys.castle[0];
- }
- if (position.castling & WHITE_LONG_CASTLE) {
- output ^= zobrist_keys.castle[1];
- }
- if (position.castling & BLACK_SHORT_CASTLE) {
- output ^= zobrist_keys.castle[2];
- }
- if (position.castling & BLACK_LONG_CASTLE) {
- output ^= zobrist_keys.castle[3];
- }
-
- output ^= zobrist_keys.turn[position.turn];
- output ^= zobrist_keys.en_passant[position.passantable_file];
-
- return output;
-}