From 1ebaab7b771c4c73be66895515f948ffe2394cc0 Mon Sep 17 00:00:00 2001
From: Aargh Rai <aargh.rai+git@gmail.com>
Date: Mon, 20 Jul 2026 21:14:44 +0530
Subject: simple ttable tests

---
 include/bitboard.h      |  1 +
 include/engine/ttable.h | 34 ++++++++++++++++++++++++++--------
 2 files changed, 27 insertions(+), 8 deletions(-)

(limited to 'include')

diff --git a/include/bitboard.h b/include/bitboard.h
index b1ddcf0..25ff27d 100644
--- a/include/bitboard.h
+++ b/include/bitboard.h
@@ -84,6 +84,7 @@ bool check_valid_position(position_t position);
     position.bitboards[BLACK_PAWN]
 
 
+int find_piece_on_square(position_t* p, int square);
 void print_position(position_t position);
 void print_bitboard(bitboard_t bitboard);
 
diff --git a/include/engine/ttable.h b/include/engine/ttable.h
index 2ee1a5c..8b1938a 100644
--- a/include/engine/ttable.h
+++ b/include/engine/ttable.h
@@ -1,11 +1,13 @@
 #ifndef TTABLE_H
 #define TTABLE_H
 
+#include "engine/moves.h"
 #include "bitboard.h"
+#include <stdatomic.h>
 
 #define TABLE_BITS 24
 #define TABLE_SIZE (1ULL << TABLE_BITS)
-#define MASK (TABLE_SIZE - 1)
+#define TT_MASK (TABLE_SIZE - 1)
 #define TT_BUCKET_SIZE 4
 
 static struct zobrist_keys {
@@ -15,6 +17,9 @@ static struct zobrist_keys {
   u64 en_passant[64];
 } zobrist_keys;
 
+void zobrist_init();
+u64 zobrist_hash(position_t position);
+
 enum { TT_EXACT, TT_LOWERBOUND, TT_UPPERBOUND };
 typedef struct {
   atomic_uint_fast64_t key;
@@ -28,16 +33,29 @@ typedef struct {
 
 typedef struct {
   tentry_t entries[TT_BUCKET_SIZE];
+  int items_filled;
 } tbucket_t;
 
 typedef tbucket_t* ttable_t;
 
-void ttable_init();
-u64 zobrist_hash(position_t position);
-void ttable_store(
-  ttable_t *ttable, u64 key, move_t move, i16 score,
-  i16 eval, u16 depth, u16 generation, u8 flag
-);
-tentry_t *ttable_probe(ttable_t *table, u64 key);
+struct ttable_insert_args {
+  u64 key;
+  move_t move;
+  i16 score;
+  i16 eval;
+  u16 depth;
+  u16 generation;
+  u8 flag;
+};
+
+void ttable_init(ttable_t *table);
+void ttable_deinit(ttable_t table);
+void __ttable_insert(ttable_t table, struct ttable_insert_args args);
+tentry_t *ttable_find(ttable_t table, u64 key);
+
+#define ttable_insert(ttable, ...) __ttable_insert( \
+  ttable, \
+  (struct ttable_insert_args) { __VA_ARGS__ } \
+)
 
 #endif // TTABLE_H
-- 
cgit v1.2.3