HCha/Stockfish
1
0
Fork 0
mirror of https://github.com/HChaZZY/Stockfish.git synced 2025-12-21 09:37:16 +08:00
Code Issues Packages Projects Releases Wiki Activity

Use 16 bits to store a move instead of 17

Browse Source 
Shrink of 1 bit so to fit a move in an uint_16 and
possibly a MoveStack in an uint_32.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2011-01-07 11:50:38 +01:00
parent dcbc8a7e75
commit a46b53e1c2
2 changed files with 22 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/tt.h
View File

@@ -80,8 +80,8 @@ protected:
///
/// the 32 bits of the data field are so defined
///
/// bit 0-16: move
/// bit 17-20: not used
/// bit 0-15: move
/// bit 16-20: not used
/// bit 21-22: value type
/// bit 23-31: generation
@@ -91,7 +91,7 @@ public:
void save(uint32_t k, Value v, ValueType t, Depth d, Move m, int g, Value statV, Value kd) {
key32 = k;
data = (m & 0x1FFFF) | (t << 21) | (g << 23);
data = (m & 0xFFFF) | (t << 21) | (g << 23);
value16 = (int16_t)v;
depth16 = (int16_t)d;
staticValue = (int16_t)statV;
@@ -101,7 +101,7 @@ public:
uint32_t key() const { return key32; }
Depth depth() const { return Depth(depth16); }
Move move() const { return Move(data & 0x1FFFF); }
Move move() const { return Move(data & 0xFFFF); }
Value value() const { return Value(value16); }
ValueType type() const { return ValueType((data >> 21) & 3); }
int generation() const { return data >> 23; }