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generate zobrist masks

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MrGeorgen
2024-09-18 22:39:16 +02:00
parent 5209dfec92
commit 4d2a86c7b7
4 changed files with 44 additions and 7 deletions
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3
include/chess/rand.h Normal file
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#include <stdint.h>
uint_least64_t rand_64();

10
src/common/rand.c Normal file
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#include <stdint.h>
#include <stdlib.h>
#include <chess/rand.h>
uint_least64_t rand_64() {
uint_least64_t u1, u2, u3, u4;
u1 = (uint_least64_t)(rand()) & 0xFFFF; u2 = (uint_least64_t)(rand()) & 0xFFFF;
u3 = (uint_least64_t)(rand()) & 0xFFFF; u4 = (uint_least64_t)(rand()) & 0xFFFF;
return u1 | (u2 << 16) | (u3 << 32) | (u4 << 48);
}

8
src/findMagicNumber.c
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#include <chess/magic.h>
#include <chess/generated/moveConsts.h>
#include <chess/bitboard.h>
#include <chess/rand.h>
#define MAX_BITS 12
#define MAX_SIZE (1 << MAX_BITS)
#define ATTACK_TABLE_LENGTH (2 * MAX_SIZE * TOTAL_BOARD_SIZE)
static uint_least64_t rand_64() {
uint_least64_t u1, u2, u3, u4;
u1 = (uint_least64_t)(rand()) & 0xFFFF; u2 = (uint_least64_t)(rand()) & 0xFFFF;
u3 = (uint_least64_t)(rand()) & 0xFFFF; u4 = (uint_least64_t)(rand()) & 0xFFFF;
return u1 | (u2 << 16) | (u3 << 32) | (u4 << 48);
}
static uint_least64_t randFewBits() {
return rand_64() & rand_64() & rand_64();
}

30
src/generateCode/zobrist.c Normal file
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#include "chess/types.h"
#include <stdint.h>
#include <stdio.h>
#include <chess/rand.h>
#include <stdlib.h>
#include <chess/print.h>
#include <inttypes.h>
static uint_least64_t zobristPieceI(struct piece_t piece, uint_least8_t field) {
return field * 2 * PIECES_LENGTH + piece.color * PIECES_LENGTH + piece.type;
}
int main() {
uint_least64_t zobristPiece[TOTAL_BOARD_SIZE * 2 * PIECES_LENGTH];
srand(0xc0229b8e);
printf("#ifndef CHESS_GENERATED_ZOBRIST_H\n"
"#define CHESS_GENERATED_ZOBRIST_H\n"
"#include <stdint.h>\n"
);
for(uint_least8_t color = BLACK; color <= WHITE; ++color) {
for(uint_least8_t pieceType = KING; pieceType < PIECES_LENGTH; ++pieceType) {
const struct piece_t piece = {pieceType, color};
for(uint_least8_t field = 0; field < TOTAL_BOARD_SIZE; ++field) {
zobristPiece[zobristPieceI(piece, field)] = rand_64();
}
}
}
defineArray("#define defineZobristPiece const static uint_least64_t ZOBRIST_PIECE", printerull, zobristPiece);
printf("#define defineZobristBlackMove const uint_least64_t ZOBRIST_BLACK_MOVE = %" PRIuLEAST64 "\n", rand_64());
}