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Clarify we want Score and Value to be integers

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No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2011-01-15 10:13:26 +01:00
parent 7faeab0878
commit 3bb1ab34e4
1 changed files with 11 additions and 15 deletions
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26
src/value.h
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@ -17,18 +17,18 @@
along with this program. If not, see <http://www.gnu.org/licenses/>. along with this program. If not, see <http://www.gnu.org/licenses/>.
*/ */
#if !defined(VALUE_H_INCLUDED) #if !defined(VALUE_H_INCLUDED)
#define VALUE_H_INCLUDED #define VALUE_H_INCLUDED
//// #include <climits>
//// Types
//// #include "types.h"
enum ValueType { enum ValueType {
VALUE_TYPE_NONE = 0, VALUE_TYPE_NONE = 0,
VALUE_TYPE_UPPER = 1, // Upper bound VALUE_TYPE_UPPER = 1,
VALUE_TYPE_LOWER = 2, // Lower bound VALUE_TYPE_LOWER = 2,
VALUE_TYPE_EXACT = VALUE_TYPE_UPPER | VALUE_TYPE_LOWER VALUE_TYPE_EXACT = VALUE_TYPE_UPPER | VALUE_TYPE_LOWER
}; };
@ -40,7 +40,8 @@ enum Value {
VALUE_MATE = 30000, VALUE_MATE = 30000,
VALUE_INFINITE = 30001, VALUE_INFINITE = 30001,
VALUE_NONE = 30002, VALUE_NONE = 30002,
VALUE_ENSURE_SIGNED = -1 VALUE_ENSURE_INTEGER_SIZE_P = INT_MAX,
VALUE_ENSURE_INTEGER_SIZE_N = INT_MIN
}; };
ENABLE_OPERATORS_ON(Value) ENABLE_OPERATORS_ON(Value)
@ -66,8 +67,8 @@ enum ScaleFactor {
// its data, so ensure Score to be an integer type. // its data, so ensure Score to be an integer type.
enum Score { enum Score {
SCORE_ZERO = 0, SCORE_ZERO = 0,
SCORE_ENSURE_32_BITS_SIZE_P = (1 << 16), SCORE_ENSURE_INTEGER_SIZE_P = INT_MAX,
SCORE_ENSURE_32_BITS_SIZE_N = -(1 << 16) SCORE_ENSURE_INTEGER_SIZE_N = INT_MIN
}; };
// Extracting the _signed_ lower and upper 16 bits it not so trivial // Extracting the _signed_ lower and upper 16 bits it not so trivial
@ -92,7 +93,7 @@ inline Score operator/(Score s, int i) { return make_score(mg_value(s) / i, eg_v
// a very high risk of overflow. So user should explicitly convert to integer. // a very high risk of overflow. So user should explicitly convert to integer.
inline Score operator*(Score s1, Score s2); inline Score operator*(Score s1, Score s2);
// Rest of operators are standard: // Remaining operators are standard
inline Score operator+ (const Score d1, const Score d2) { return Score(int(d1) + int(d2)); } inline Score operator+ (const Score d1, const Score d2) { return Score(int(d1) + int(d2)); }
inline Score operator- (const Score d1, const Score d2) { return Score(int(d1) - int(d2)); } inline Score operator- (const Score d1, const Score d2) { return Score(int(d1) - int(d2)); }
inline Score operator* (int i, const Score d) { return Score(i * int(d)); } inline Score operator* (int i, const Score d) { return Score(i * int(d)); }
@ -103,11 +104,6 @@ inline void operator-= (Score& d1, const Score d2) { d1 = d1 - d2; }
inline void operator*= (Score& d, int i) { d = Score(int(d) * i); } inline void operator*= (Score& d, int i) { d = Score(int(d) * i); }
inline void operator/= (Score& d, int i) { d = Score(int(d) / i); } inline void operator/= (Score& d, int i) { d = Score(int(d) / i); }
////
//// Inline functions
////
inline Value value_mate_in(int ply) { inline Value value_mate_in(int ply) {
return VALUE_MATE - ply; return VALUE_MATE - ply;
} }