/usr/include/osl/offset32.h is in libosl-dev 0.4.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | /* offset32.h
*/
#ifndef OSL_OFFSET32_H
#define OSL_OFFSET32_H
#include "osl/misc/loki.h"
#include "osl/square.h"
namespace osl
{
/**
* 差が uniqになるような座標の差分.
* x*32+y同士の差を取る
* ちょっとだけ溢れても良い
*/
template <int Width, int Width2>
class Offset32Base
{
enum {
MIN = -(Width*32+Width),
MAX = (Width*32+Width),
};
public:
static const unsigned int SIZE=(MAX-MIN+1);
private:
int offset32;
explicit Offset32Base(int o) : offset32(o)
{
}
public:
Offset32Base(Square to, Square from)
: offset32(to.indexForOffset32()-from.indexForOffset32())
{
assert((to.x()-from.x() >= -Width) && (to.x()-from.x() <= Width)
&& (to.y()-from.y() >= -Width) && (to.y()-from.y() <= Width));
assert(MIN<=offset32 && offset32<=MAX);
}
Offset32Base(int dx,int dy) : offset32(dx*32+dy) {
assert(-Width2<=dx && dx<=Width2 && -Width2<=dy && dy<=Width2);
}
unsigned int index() const
{
return offset32 - MIN;
}
bool isValid() const
{
return MIN <=offset32 && offset32 <= MAX;
}
private:
const Offset32Base blackOffset32(Int2Type<BLACK>) const { return *this; }
const Offset32Base blackOffset32(Int2Type<WHITE>) const { return Offset32Base(-offset32); }
public:
/**
* Player P からみた offset を黒番のものに変更する
*/
template<Player P>
const Offset32Base blackOffset32() const { return blackOffset32(Int2Type<P>()); }
const Offset32Base operator-() const { return Offset32Base(-offset32); }
private:
// these functions are *intentionally* unimplemented for the moment.
// don't forget the fact that x or y can be negative.
int dx(Offset32Base offset32);
int dy(Offset32Base offset32);
};
typedef Offset32Base<8,9> Offset32;
typedef Offset32Base<10,10> Offset32Wide;
} // namespace osl
#endif /* OSL_OFFSET32_H */
// ;;; Local Variables:
// ;;; mode:c++
// ;;; c-basic-offset:2
// ;;; End:
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