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Rename value in bestValue in id_loop()

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The value returned by root search it is actually
our best value, so rename the variable to reflect this.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2011-11-13 10:54:30 +01:00
parent c4fc82c6b7
commit 4cc272cb94
1 changed files with 10 additions and 10 deletions
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20
src/search.cpp
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@ -496,7 +496,7 @@ namespace {
Value bestValues[PLY_MAX_PLUS_2]; Value bestValues[PLY_MAX_PLUS_2];
int bestMoveChanges[PLY_MAX_PLUS_2]; int bestMoveChanges[PLY_MAX_PLUS_2];
int depth, aspirationDelta; int depth, aspirationDelta;
Value value, alpha, beta; Value bestValue, alpha, beta;
Move bestMove, easyMove, skillBest, skillPonder; Move bestMove, easyMove, skillBest, skillPonder;
// Initialize stuff before a new search // Initialize stuff before a new search
@ -505,7 +505,7 @@ namespace {
H.clear(); H.clear();
*ponderMove = bestMove = easyMove = skillBest = skillPonder = MOVE_NONE; *ponderMove = bestMove = easyMove = skillBest = skillPonder = MOVE_NONE;
depth = aspirationDelta = 0; depth = aspirationDelta = 0;
value = alpha = -VALUE_INFINITE, beta = VALUE_INFINITE; bestValue = alpha = -VALUE_INFINITE, beta = VALUE_INFINITE;
ss->currentMove = MOVE_NULL; // Hack to skip update gains ss->currentMove = MOVE_NULL; // Hack to skip update gains
// Moves to search are verified and copied // Moves to search are verified and copied
@ -555,7 +555,7 @@ namespace {
do { do {
// Search starts from ss+1 to allow referencing (ss-1). This is // Search starts from ss+1 to allow referencing (ss-1). This is
// needed by update gains and ss copy when splitting at Root. // needed by update gains and ss copy when splitting at Root.
value = search<Root>(pos, ss+1, alpha, beta, depth * ONE_PLY); bestValue = search<Root>(pos, ss+1, alpha, beta, depth * ONE_PLY);
// Bring to front the best move. It is critical that sorting is // Bring to front the best move. It is critical that sorting is
// done with a stable algorithm because all the values but the first // done with a stable algorithm because all the values but the first
@ -569,7 +569,7 @@ namespace {
// the fail high/low loop then reorder the PV moves, otherwise // the fail high/low loop then reorder the PV moves, otherwise
// leave the last PV move in its position so to be searched again. // leave the last PV move in its position so to be searched again.
// Of course this is needed only in MultiPV search. // Of course this is needed only in MultiPV search.
if (MultiPVIdx && value > alpha && value < beta) if (MultiPVIdx && bestValue > alpha && bestValue < beta)
sort<RootMove>(Rml.begin(), Rml.begin() + MultiPVIdx); sort<RootMove>(Rml.begin(), Rml.begin() + MultiPVIdx);
// Write PV back to transposition table in case the relevant entries // Write PV back to transposition table in case the relevant entries
@ -587,7 +587,7 @@ namespace {
// if we have a fail high/low and we are deep in the search. UCI // if we have a fail high/low and we are deep in the search. UCI
// protocol requires to send all the PV lines also if are still // protocol requires to send all the PV lines also if are still
// to be searched and so refer to the previous search's score. // to be searched and so refer to the previous search's score.
if ((value > alpha && value < beta) || elapsed_search_time() > 2000) if ((bestValue > alpha && bestValue < beta) || elapsed_search_time() > 2000)
for (int i = 0; i < std::min(UCIMultiPV, (int)Rml.size()); i++) for (int i = 0; i < std::min(UCIMultiPV, (int)Rml.size()); i++)
{ {
bool updated = (i <= MultiPVIdx); bool updated = (i <= MultiPVIdx);
@ -608,12 +608,12 @@ namespace {
// In case of failing high/low increase aspiration window and // In case of failing high/low increase aspiration window and
// research, otherwise exit the fail high/low loop. // research, otherwise exit the fail high/low loop.
if (value >= beta) if (bestValue >= beta)
{ {
beta = std::min(beta + aspirationDelta, VALUE_INFINITE); beta = std::min(beta + aspirationDelta, VALUE_INFINITE);
aspirationDelta += aspirationDelta / 2; aspirationDelta += aspirationDelta / 2;
} }
else if (value <= alpha) else if (bestValue <= alpha)
{ {
AspirationFailLow = true; AspirationFailLow = true;
StopOnPonderhit = false; StopOnPonderhit = false;
@ -624,13 +624,13 @@ namespace {
else else
break; break;
} while (abs(value) < VALUE_KNOWN_WIN); } while (abs(bestValue) < VALUE_KNOWN_WIN);
} }
// Collect info about search result // Collect info about search result
bestMove = Rml[0].pv[0]; bestMove = Rml[0].pv[0];
*ponderMove = Rml[0].pv[1]; *ponderMove = Rml[0].pv[1];
bestValues[depth] = value; bestValues[depth] = bestValue;
bestMoveChanges[depth] = Rml.bestMoveChanges; bestMoveChanges[depth] = Rml.bestMoveChanges;
// Skills: Do we need to pick now the best and the ponder moves ? // Skills: Do we need to pick now the best and the ponder moves ?
@ -640,7 +640,7 @@ namespace {
if (Options["Use Search Log"].value<bool>()) if (Options["Use Search Log"].value<bool>())
{ {
Log log(Options["Search Log Filename"].value<string>()); Log log(Options["Search Log Filename"].value<string>());
log << pretty_pv(pos, depth, value, elapsed_search_time(), &Rml[0].pv[0]) << endl; log << pretty_pv(pos, depth, bestValue, elapsed_search_time(), &Rml[0].pv[0]) << endl;
} }
// Init easyMove at first iteration or drop it if differs from the best move // Init easyMove at first iteration or drop it if differs from the best move