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Code Issues Releases Wiki Activity

Templetize xxx_time_for_MTG()

Browse source 
Also fixed some warnings under MSVC.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2010-08-02 12:14:27 +02:00
parent 391cd57b52
commit cf0295f1ad
2 changed files with 24 additions and 29 deletions
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51
src/timeman.cpp
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@ -35,9 +35,9 @@ namespace {
/// Constants
const int MaxMoveHorizon = 50; // Plan time management at most this many moves ahead
const float MaxRatio = 3.0; // When in trouble, we can step over reserved time with this ratio
const float MaxStealRatio = 0.33; // However we must not steal time from remaining moves over this ratio
const int MoveHorizon = 50; // Plan time management at most this many moves ahead
const float MaxRatio = 3.0f; // When in trouble, we can step over reserved time with this ratio
const float StealRatio = 0.33f; // However we must not steal time from remaining moves over this ratio
// MoveImportance[] is based on naive statistical analysis of "how many games are still undecided
@ -76,8 +76,10 @@ namespace {
/// Function Prototypes
int min_time_for_MTG(int myTime, int movesToGo, int currentPly);
int max_time_for_MTG(int myTime, int movesToGo, int currentPly);
enum TimeType { MaxTime, AbsTime };
template<TimeType>
int remaining(int myTime, int movesToGo, int currentPly);
}
@ -103,7 +105,7 @@ void get_search_times(int myTime, int myInc, int movesToGo, int currentPly,
minThinkingTime :No matter what, use at least this much thinking before doing the move
*/
int hypMTG, hypMyTime;
int hypMTG, hypMyTime, mTime, aTime;
// Read uci parameters
int emergencyMoveHorizon = get_option_value_int("Emergency Move Horizon");
@ -116,13 +118,16 @@ void get_search_times(int myTime, int myInc, int movesToGo, int currentPly,
// We calculate optimum time usage for different hypothetic "moves to go"-values and choose the
// minimum of calculated search time values. Usually the greatest hypMTG gives the minimum values.
for (hypMTG = 1; hypMTG <= (movesToGo ? Min(movesToGo, MaxMoveHorizon) : MaxMoveHorizon); hypMTG++)
for (hypMTG = 1; hypMTG <= (movesToGo ? Min(movesToGo, MoveHorizon) : MoveHorizon); hypMTG++)
{
// Calculate thinking time for hypothetic "moves to go"-value
hypMyTime = Max(myTime + (hypMTG - 1) * myInc - emergencyBaseTime - Min(hypMTG, emergencyMoveHorizon) * emergencyMoveTime, 0);
*maxSearchTime = Min(*maxSearchTime, minThinkingTime + min_time_for_MTG(hypMyTime, hypMTG, currentPly));
*absoluteMaxSearchTime = Min(*absoluteMaxSearchTime, minThinkingTime + max_time_for_MTG(hypMyTime, hypMTG, currentPly));
mTime = minThinkingTime + remaining<MaxTime>(hypMyTime, hypMTG, currentPly);
aTime = minThinkingTime + remaining<AbsTime>(hypMyTime, hypMTG, currentPly);
*maxSearchTime = Min(*maxSearchTime, mTime);
*absoluteMaxSearchTime = Min(*absoluteMaxSearchTime, aTime);
}
// Make sure that maxSearchTime is not over absoluteMaxSearchTime
@ -135,31 +140,21 @@ void get_search_times(int myTime, int myInc, int movesToGo, int currentPly,
namespace {
int min_time_for_MTG(int myTime, int movesToGo, int currentPly)
template<TimeType T>
int remaining(int myTime, int movesToGo, int currentPly)
{
float thisMoveImportance = move_importance(currentPly);
float otherMovesImportance = 0;
const float TMaxRatio = (T == MaxTime ? 1 : MaxRatio);
const float TStealRatio = (T == MaxTime ? 0 : StealRatio);
int thisMoveImportance = move_importance(currentPly);
int otherMovesImportance = 0;
for (int i = 1; i < movesToGo; i++)
otherMovesImportance += move_importance(currentPly + 2 * i);
float ratio = thisMoveImportance / (thisMoveImportance + otherMovesImportance);
return int(floor(myTime * ratio));
}
int max_time_for_MTG(int myTime, int movesToGo, int currentPly)
{
float thisMoveImportance = move_importance(currentPly);
float otherMovesImportance = 0;
for (int i = 1; i < movesToGo; i++)
otherMovesImportance += move_importance(currentPly + 2 * i);
float ratio1 = (MaxRatio * thisMoveImportance) / (MaxRatio * thisMoveImportance + otherMovesImportance);
float ratio2 = (thisMoveImportance + MaxStealRatio * otherMovesImportance) / (thisMoveImportance + otherMovesImportance);
float ratio1 = (TMaxRatio * thisMoveImportance) / float(TMaxRatio * thisMoveImportance + otherMovesImportance);
float ratio2 = (thisMoveImportance + TStealRatio * otherMovesImportance) / float(thisMoveImportance + otherMovesImportance);
return int(floor(myTime * Min(ratio1, ratio2)));
}
}

2
src/timeman.h
View file

@ -28,4 +28,4 @@
void get_search_times(int myTime, int myInc, int movesToGo, int currentPly,
int* maxSearchTime, int* absoluteMaxSearchTime);
#endif // !defined(SEARCH_H_INCLUDED)
#endif // !defined(TIMEMAN_H_INCLUDED)