/usr/include/osl/effect/boardBitMask.h is in libosl-dev 0.6.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*/
#ifndef _BOARD_BIT_MASK_H
#define _BOARD_BIT_MASK_H
#include "osl/square.h"
#include "osl/misc/carray.h"
#include "osl/misc/carray2d.h"
#include <iosfwd>
namespace osl
{
namespace effect
{
/**
* SSE2も可なのだが，あまり良い方法が見つからない
*/
#ifdef USE_XMM
typedef int v4sf __attribute__ ((mode(V4SF))); // works
#endif
struct BoardBitMask{
#ifdef USE_XMM
union {
v4sf xmm;
CArray<unsigned long long,2> mask;
CArray<unsigned char,16> bMask;
};
#else
union {
CArray<unsigned long long,2> mask;
CArray<unsigned char,16> bMask;
};
#endif
friend BoardBitMask& operator&=(BoardBitMask& lhs,BoardBitMask const& rhs);
friend BoardBitMask& operator^=(BoardBitMask& lhs,BoardBitMask const& rhs);
friend BoardBitMask operator^(BoardBitMask& src1,BoardBitMask const& src2);
public:
BoardBitMask(){}
template<class State>
explicit BoardBitMask(State const& st){
clearAll();
for(int y=1;y<=9;y++){
for(int x=1;x<=9;x++){
Square position(x,y);
if (st.pieceAt(position).isEmpty())
setBit(positionToOffset(position));
}
}
}
/**
* すべてのビットが0のものを作る
*/
void clearAll(){mask[0]=mask[1]=0ull;}
void setAll(){mask[0]=mask[1]=static_cast<unsigned long long>(-1ll);}
/**
* 0-8 11-19 22-30
* 33-41 44-52 55-63
* 66-74 77-85 88-96
* でやってみる
* 香車と角の利きをなんとかするアイデアもあったのだが
*/
static int positionToOffset(Square pos){
assert(pos.isOnBoard());
const int x=pos.x();
const int y=pos.y();
return (x-1)*11+(y-1);
}
/**
* @param offset(0-96) - bitをセットする
*/
void setBit(int offset){
assert(0<=offset && offset<=96);
int index=offset>>6;
unsigned long long tmpMask=1ull<<(offset&63);
assert((index == 0) || (index == 1));
mask[index]|= tmpMask;
}
void setBit(Square pos){
setBit(positionToOffset(pos));
}
/**
* @param offset(0-96) - bitをクリアする
*/
void clearBit(int offset){
assert(0<=offset && offset<=96);
int index=offset>>6;
unsigned long long tmpMask=1ull<<(offset&63);
assert((index == 0) || (index == 1));
mask[index]&= ~tmpMask;
}
void clearBit(Square pos){
clearBit(positionToOffset(pos));
}
bool isZero() const{
return (mask[0]|mask[1])==0ull;
}
BoardBitMask& operator=(BoardBitMask const& rhs){
if (this == &rhs)
return *this;
#ifdef USE_XMM
xmm=rhs.xmm;
#else
mask[0]=rhs.mask[0];
mask[1]=rhs.mask[1];
#endif
return *this;
}
};
inline BoardBitMask& operator^=(BoardBitMask& lhs,BoardBitMask const& rhs){
#ifdef USE_XMM
lhs.xmm=__builtin_ia32_xorps(lhs.xmm,rhs.xmm);
#else
lhs.mask[0]^=rhs.mask[0];
lhs.mask[1]^=rhs.mask[1];
#endif
return lhs;
}
inline BoardBitMask operator^(BoardBitMask const& lhs,BoardBitMask const& rhs){
#ifdef USE_XMM
BoardBitMask ret=lhs;
ret.xmm=__builtin_ia32_xorps(lhs.xmm,rhs.xmm);
return ret;
#else
BoardBitMask ret=lhs;
ret.mask[0]^=rhs.mask[0];
ret.mask[1]^=rhs.mask[1];
return ret;
#endif
}
std::ostream& operator<<(std::ostream& os,BoardBitMask const& boardBitMask);
class BoardBitMaskTable{
CArray<BoardBitMask, Square::SIZE> maskOfSquare;
/**
* lanceに関しては作らなくても良いかも
* lanceBetweenMask[from][to] が non all 0 なら黒からの利きがある
*/
CArray2d<BoardBitMask,Square::SIZE,Square::SIZE> rookBetweenMask;
/**
*
*/
CArray2d<BoardBitMask, Square::SIZE,Square::SIZE> lanceBetweenMask;
CArray2d<BoardBitMask, Square::SIZE,Square::SIZE> bishopBetweenMask;
private:
void initMaskOfSquare();
void initBetweenMask();
public:
BoardBitMaskTable();
const BoardBitMask& getMask(Square pos) const{
assert(pos.isOnBoard());
return maskOfSquare[pos.index()];
}
const BoardBitMask& getRookMask(Square from,Square to) const{
assert(from.isOnBoard() && to.isOnBoard());
return rookBetweenMask[from.index()][to.index()];
}
const BoardBitMask& getBishopMask(Square from,Square to) const{
assert(from.isOnBoard() && to.isOnBoard());
return bishopBetweenMask[from.index()][to.index()];
}
const BoardBitMask& getLanceMask(Square from,Square to) const{
assert(from.isOnBoard() && to.isOnBoard());
return lanceBetweenMask[from.index()][to.index()];
}
};
#if 0
// テーブル削除予定
extern const BoardBitMaskTable Board_Bit_Mask_Table;
#endif
} // namespace effect
} // namespace osl
#endif // _BOARD_BIT_MASK_H
// ;;; Local Variables:
// ;;; mode:c++
// ;;; c-basic-offset:2
// ;;; End:
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