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Use int instead of Value for history related stats.

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history related scores are not related to evaluation based scores.
For example, can easily exceed the range -VALUE_INFINITE,VALUE_INFINITE.
As such the current type is confusing, and a plain int is a better match.

tested for no regression:

STC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 43693 W: 7909 L: 7827 D: 27957

No functional change.

Closes #1070
This commit is contained in:
Joost VandeVondele
2017-04-23 07:57:48 -07:00
committed by Joona Kiiski
parent ced29248c9
commit 9da3b44ddc
5 changed files with 23 additions and 23 deletions
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14
src/movepick.h
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@@ -33,11 +33,11 @@
/// during the current search, and is used for reduction and move ordering decisions.
struct HistoryStats {
static const Value Max = Value(1 << 28);
static const int Max = 1 << 28;
Value get(Color c, Move m) const { return table[c][from_sq(m)][to_sq(m)]; }
int get(Color c, Move m) const { return table[c][from_sq(m)][to_sq(m)]; }
void clear() { std::memset(table, 0, sizeof(table)); }
void update(Color c, Move m, Value v) {
void update(Color c, Move m, int v) {
Square from = from_sq(m);
Square to = to_sq(m);
@@ -51,7 +51,7 @@ struct HistoryStats {
}
private:
Value table[COLOR_NB][SQUARE_NB][SQUARE_NB];
int table[COLOR_NB][SQUARE_NB][SQUARE_NB];
};
@@ -66,9 +66,9 @@ struct Stats {
const T* operator[](Piece pc) const { return table[pc]; }
T* operator[](Piece pc) { return table[pc]; }
void clear() { std::memset(table, 0, sizeof(table)); }
void fill(const Value& v) { std::fill(&table[0][0], &table[PIECE_NB-1][SQUARE_NB-1]+1, v); };
void fill(const int& v) { std::fill(&table[0][0], &table[PIECE_NB-1][SQUARE_NB-1]+1, v); };
void update(Piece pc, Square to, Move m) { table[pc][to] = m; }
void update(Piece pc, Square to, Value v) {
void update(Piece pc, Square to, int v) {
const int denom = 936;
@@ -83,7 +83,7 @@ private:
};
typedef Stats<Move> MoveStats;
typedef Stats<Value> CounterMoveStats;
typedef Stats<int> CounterMoveStats;
typedef Stats<CounterMoveStats> CounterMoveHistoryStats;