X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fvalue.h;h=fec6516a4c8c4014427afeeb3cf22d6b9941d865;hp=03ae24b7832770fa19128c5dc8e609bd230ec2d9;hb=0973cc2ef63060294f790803e0525b66ee91dfee;hpb=ef6fca98a0b70b82ba701e6969a80cd9daf78705

diff --git a/src/value.h b/src/value.h
index 03ae24b7..fec6516a 100644
--- a/src/value.h
+++ b/src/value.h
@@ -52,10 +52,11 @@ enum Value {
 };
 
 
-/// Score struct keeps a midgame and an endgame value in a single
-/// ScoreValue 64 bit union.
+/// Score enum keeps a midgame and an endgame value in a single
+/// integer (enum), first LSB 16 bits are used to store endgame
+/// value, while upper bits are used for midgame value.
 
-enum Score;
+enum Score { ENSURE_32_BIT_SIZE = 1 << 31 };
 
 inline Value eg_value(Score s) { return Value(int16_t(s & 0xffff)); }
 inline Value mg_value(Score s) { return Value((int(s) + 32768) >> 16); }
@@ -68,20 +69,14 @@ inline Score operator-(Score s1, Score s2) { return Score(int(s1) - int(s2)); }
 inline void operator+=(Score& s1, Score s2) { s1 = Score(int(s1) + int(s2)); }
 inline void operator-=(Score& s1, Score s2) { s1 = Score(int(s1) - int(s2)); }
 inline Score operator*(int i, Score s) { return Score(i * int(s)); }
-inline Score operator/(Score s, int i) { return Score(int(s) / i); }
+
+// Division must be handled separately for each term
+inline Score operator/(Score s, int i) { return make_score(mg_value(s) / i, eg_value(s) / i); }
 
 // Only declared but not defined. We don't want to multiply two scores due to
 // a very high risk of overflow. So user should explicitly convert to integer.
 inline Score operator*(Score s1, Score s2);
 
-// Following are only declared to prevent erroneus instantations
-inline Score operator*(Score s, int i);
-inline Score operator/(Score s1, Score s2);
-inline Score operator+(Score s, int i);
-inline Score operator+(int i, Score s);
-inline Score operator-(Score s, int i);
-inline Score operator-(int i, Score s);
-
 
 ////
 //// Constants and variables