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Change Score definition to avoid the union

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No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2009-11-07 19:18:44 +01:00
parent 776c7df30c
commit fea46a8212
1 changed files with 12 additions and 19 deletions
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31
src/value.h
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@ -55,36 +55,29 @@ enum Value {
/// Score struct keeps a midgame and an endgame value in a single
/// ScoreValue 64 bit union.
union ScoreValue {
int64_t v64;
struct {
int32_t mgv;
int32_t egv;
} v32;
};
typedef int score_t;
struct Score {
Score() {}
Score(const Score& s) { v = s.v; }
Score(int mg, int eg) { v.v32.mgv = int32_t(mg); v.v32.egv = int32_t(eg); }
Score(score_t mg, score_t eg) { mgv = mg; egv = eg; }
Score& operator=(const Score& s) { v = s.v; return *this; }
Score& operator+=(const Score& s) { v.v32.mgv += s.v.v32.mgv; v.v32.egv += s.v.v32.egv; return *this; }
Score& operator-=(const Score& s) { v.v32.mgv -= s.v.v32.mgv; v.v32.egv -= s.v.v32.egv; return *this; }
Score& operator+=(const Score& s) { mgv += s.mg(); egv += s.eg(); return *this; }
Score& operator-=(const Score& s) { mgv -= s.mg(); egv -= s.eg(); return *this; }
Score operator+(const Score& s) { return Score(mg() + s.mg(), eg() + s.eg()); }
Score operator-(const Score& s) { return Score(mg() - s.mg(), eg() - s.eg()); }
bool operator==(const Score& s) { return v.v64 == s.v.v64; }
bool operator!=(const Score& s) { return v.v64 != s.v.v64; }
bool operator==(const Score& s) { return mgv == s.mg() && egv == s.eg(); }
bool operator!=(const Score& s) { return !(*this == s); }
Value mg() const { return Value(v.v32.mgv); }
Value eg() const { return Value(v.v32.egv); }
Value mg() const { return Value(mgv); }
Value eg() const { return Value(egv); }
private:
ScoreValue v;
score_t mgv;
score_t egv;
};
inline Score operator+(Score s1, Score s2) { return Score(s1.mg() + s2.mg(), s1.eg() + s2.eg()); }
inline Score operator-(Score s1, Score s2) { return Score(s1.mg() - s2.mg(), s1.eg() - s2.eg()); }
inline Score operator*(Score s1, Score s2) { return Score(s1.mg() * s2.mg(), s1.eg() * s2.eg()); }
inline Score operator*(int i, Score s) { return Score(i * s.mg(), i * s.eg()); }
inline Score operator*(Score s, int i) { return Score(s.mg() * i, s.eg() * i); }