init.c

#include "defs.h"
#include "stdio.h"
#include "stdlib.h"

#define RAND_64 	((U64)rand() | \
					(U64)rand() << 15 | \
					(U64)rand() << 30 | \
					(U64)rand() << 45 | \
					((U64)rand() & 0xf) << 60 )  
					
int Sq120ToSq64[BRD_SQ_NUM];
int Sq64ToSq120[64];

U64 SetMask[64];
U64 ClearMask[64];

U64 PieceKeys[13][120];
U64 SideKey;
U64 CastleKeys[16];

int FilesBrd[BRD_SQ_NUM];
int RanksBrd[BRD_SQ_NUM];

void InitFilesRanksBrd() {
	
	int index = 0;
	int file = FILE_A;
	int rank = RANK_1;
	int sq = A1;
	int sq64 = 0;
	
	for(index = 0; index < BRD_SQ_NUM; ++index) {
		FilesBrd[index] = OFFBOARD;
		RanksBrd[index] = OFFBOARD;
	}
	
	for(rank = RANK_1; rank <= RANK_8; ++rank) {
		for(file = FILE_A; file <= FILE_H; ++file) {
			sq = FR2SQ(file,rank);
			FilesBrd[sq] = file;
			RanksBrd[sq] = rank;
		}
	}
}

void InitHashKeys() {
	
	int index = 0;
	int index2 = 0;
	for(index = 0; index < 13; ++index) {
		for(index2 = 0; index2 < 120; ++index2) {
			PieceKeys[index][index2] = RAND_64;
		}
	}
	SideKey = RAND_64;
	for(index = 0; index < 16; ++index) {
		CastleKeys[index] = RAND_64;
	}

}

void InitBitMasks() {
	int index = 0;
	
	for(index = 0; index < 64; index++) {
		SetMask[index] = 0ULL;
		ClearMask[index] = 0ULL;
	}
	
	for(index = 0; index < 64; index++) {
		SetMask[index] |= (1ULL << index);
		ClearMask[index] = ~SetMask[index];
	}
}

void InitSq120To64() {

	int index = 0;
	int file = FILE_A;
	int rank = RANK_1;
	int sq = A1;
	int sq64 = 0;
	for(index = 0; index < BRD_SQ_NUM; ++index) {
		Sq120ToSq64[index] = 65;
	}
	
	for(index = 0; index < 64; ++index) {
		Sq64ToSq120[index] = 120;
	}
	
	for(rank = RANK_1; rank <= RANK_8; ++rank) {
		for(file = FILE_A; file <= FILE_H; ++file) {
			sq = FR2SQ(file,rank);
			Sq64ToSq120[sq64] = sq;
			Sq120ToSq64[sq] = sq64;
			sq64++;
		}
	}
}

void AllInit() {
	InitSq120To64();	
	InitBitMasks();
	InitHashKeys();
	InitFilesRanksBrd();
	InitMvvLva();
}