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Fix comments, rename variables

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Thanks everybody for the various hints in the perpetual renaming thread:
https://github.com/official-stockfish/Stockfish/issues/1426

No functional change
This commit is contained in:
Stéphane Nicolet
2018-06-02 17:41:37 +02:00
parent 6cc5614124
commit a0486ecb40
8 changed files with 58 additions and 61 deletions
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64
src/search.cpp
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@@ -353,17 +353,17 @@ void Thread::search() {
for (RootMove& rm : rootMoves)
rm.previousScore = rm.score;
size_t PVFirst = 0;
PVLast = 0;
size_t pvFirst = 0;
pvLast = 0;
// MultiPV loop. We perform a full root search for each PV line
for (PVIdx = 0; PVIdx < multiPV && !Threads.stop; ++PVIdx)
for (pvIdx = 0; pvIdx < multiPV && !Threads.stop; ++pvIdx)
{
if (PVIdx == PVLast)
if (pvIdx == pvLast)
{
PVFirst = PVLast;
for (PVLast++; PVLast < rootMoves.size(); PVLast++)
if (rootMoves[PVLast].TBRank != rootMoves[PVFirst].TBRank)
pvFirst = pvLast;
for (pvLast++; pvLast < rootMoves.size(); pvLast++)
if (rootMoves[pvLast].tbRank != rootMoves[pvFirst].tbRank)
break;
}
@@ -373,7 +373,7 @@ void Thread::search() {
// Reset aspiration window starting size
if (rootDepth >= 5 * ONE_PLY)
{
Value previousScore = rootMoves[PVIdx].previousScore;
Value previousScore = rootMoves[pvIdx].previousScore;
delta = Value(18);
alpha = std::max(previousScore - delta,-VALUE_INFINITE);
beta = std::min(previousScore + delta, VALUE_INFINITE);
@@ -398,7 +398,7 @@ void Thread::search() {
// and we want to keep the same order for all the moves except the
// new PV that goes to the front. Note that in case of MultiPV
// search the already searched PV lines are preserved.
std::stable_sort(rootMoves.begin() + PVIdx, rootMoves.begin() + PVLast);
std::stable_sort(rootMoves.begin() + pvIdx, rootMoves.begin() + pvLast);
// If search has been stopped, we break immediately. Sorting is
// safe because RootMoves is still valid, although it refers to
@@ -438,10 +438,10 @@ void Thread::search() {
}
// Sort the PV lines searched so far and update the GUI
std::stable_sort(rootMoves.begin() + PVFirst, rootMoves.begin() + PVIdx + 1);
std::stable_sort(rootMoves.begin() + pvFirst, rootMoves.begin() + pvIdx + 1);
if ( mainThread
&& (Threads.stop || PVIdx + 1 == multiPV || Time.elapsed() > 3000))
&& (Threads.stop || pvIdx + 1 == multiPV || Time.elapsed() > 3000))
sync_cout << UCI::pv(rootPos, rootDepth, alpha, beta) << sync_endl;
}
@@ -613,7 +613,7 @@ namespace {
posKey = pos.key() ^ Key(excludedMove << 16); // Isn't a very good hash
tte = TT.probe(posKey, ttHit);
ttValue = ttHit ? value_from_tt(tte->value(), ss->ply) : VALUE_NONE;
ttMove = rootNode ? thisThread->rootMoves[thisThread->PVIdx].pv[0]
ttMove = rootNode ? thisThread->rootMoves[thisThread->pvIdx].pv[0]
: ttHit ? tte->move() : MOVE_NONE;
// At non-PV nodes we check for an early TT cutoff
@@ -751,7 +751,7 @@ namespace {
&& ss->staticEval >= beta - 36 * depth / ONE_PLY + 225
&& !excludedMove
&& pos.non_pawn_material(us)
&& (ss->ply > thisThread->nmp_min_ply || us != thisThread->nmp_color))
&& (ss->ply > thisThread->nmpMinPly || us != thisThread->nmpColor))
{
assert(eval - beta >= 0);
@@ -773,19 +773,19 @@ namespace {
if (nullValue >= VALUE_MATE_IN_MAX_PLY)
nullValue = beta;
if (thisThread->nmp_min_ply || (abs(beta) < VALUE_KNOWN_WIN && depth < 12 * ONE_PLY))
if (thisThread->nmpMinPly || (abs(beta) < VALUE_KNOWN_WIN && depth < 12 * ONE_PLY))
return nullValue;
assert(!thisThread->nmp_min_ply); // Recursive verification is not allowed
assert(!thisThread->nmpMinPly); // Recursive verification is not allowed
// Do verification search at high depths, with null move pruning disabled
// for us, until ply exceeds nmp_min_ply.
thisThread->nmp_min_ply = ss->ply + 3 * (depth-R) / 4 - 1;
thisThread->nmp_color = us;
// for us, until ply exceeds nmpMinPly.
thisThread->nmpMinPly = ss->ply + 3 * (depth-R) / 4 - 1;
thisThread->nmpColor = us;
Value v = search<NonPV>(pos, ss, beta-1, beta, depth-R, false);
thisThread->nmp_min_ply = 0;
thisThread->nmpMinPly = 0;
if (v >= beta)
return nullValue;
@@ -870,8 +870,8 @@ moves_loop: // When in check, search starts from here
// Move List. As a consequence any illegal move is also skipped. In MultiPV
// mode we also skip PV moves which have been already searched and those
// of lower "TB rank" if we are in a TB root position.
if (rootNode && !std::count(thisThread->rootMoves.begin() + thisThread->PVIdx,
thisThread->rootMoves.begin() + thisThread->PVLast, move))
if (rootNode && !std::count(thisThread->rootMoves.begin() + thisThread->pvIdx,
thisThread->rootMoves.begin() + thisThread->pvLast, move))
continue;
ss->moveCount = ++moveCount;
@@ -879,7 +879,7 @@ moves_loop: // When in check, search starts from here
if (rootNode && thisThread == Threads.main() && Time.elapsed() > 3000)
sync_cout << "info depth " << depth / ONE_PLY
<< " currmove " << UCI::move(move, pos.is_chess960())
<< " currmovenumber " << moveCount + thisThread->PVIdx << sync_endl;
<< " currmovenumber " << moveCount + thisThread->pvIdx << sync_endl;
if (PvNode)
(ss+1)->pv = nullptr;
@@ -995,11 +995,11 @@ moves_loop: // When in check, search starts from here
if (captureOrPromotion) // (~5 Elo)
{
//Increase reduction by comparing opponent's stat score
if ( (ss-1)->statScore >= 0
// Increase reduction by comparing opponent's stat score
if ( (ss-1)->statScore >= 0
&& thisThread->captureHistory[movedPiece][to_sq(move)][type_of(pos.captured_piece())] < 0)
r += ONE_PLY;
r -= r ? ONE_PLY : DEPTH_ZERO;
}
else
@@ -1576,14 +1576,14 @@ string UCI::pv(const Position& pos, Depth depth, Value alpha, Value beta) {
std::stringstream ss;
TimePoint elapsed = Time.elapsed() + 1;
const RootMoves& rootMoves = pos.this_thread()->rootMoves;
size_t PVIdx = pos.this_thread()->PVIdx;
size_t pvIdx = pos.this_thread()->pvIdx;
size_t multiPV = std::min((size_t)Options["MultiPV"], rootMoves.size());
uint64_t nodesSearched = Threads.nodes_searched();
uint64_t tbHits = Threads.tb_hits() + (TB::RootInTB ? rootMoves.size() : 0);
for (size_t i = 0; i < multiPV; ++i)
{
bool updated = (i <= PVIdx && rootMoves[i].score != -VALUE_INFINITE);
bool updated = (i <= pvIdx && rootMoves[i].score != -VALUE_INFINITE);
if (depth == ONE_PLY && !updated)
continue;
@@ -1592,7 +1592,7 @@ string UCI::pv(const Position& pos, Depth depth, Value alpha, Value beta) {
Value v = updated ? rootMoves[i].score : rootMoves[i].previousScore;
bool tb = TB::RootInTB && abs(v) < VALUE_MATE - MAX_PLY;
v = tb ? rootMoves[i].TBScore : v;
v = tb ? rootMoves[i].tbScore : v;
if (ss.rdbuf()->in_avail()) // Not at first line
ss << "\n";
@@ -1603,7 +1603,7 @@ string UCI::pv(const Position& pos, Depth depth, Value alpha, Value beta) {
<< " multipv " << i + 1
<< " score " << UCI::value(v);
if (!tb && i == PVIdx)
if (!tb && i == pvIdx)
ss << (v >= beta ? " lowerbound" : v <= alpha ? " upperbound" : "");
ss << " nodes " << nodesSearched
@@ -1686,16 +1686,16 @@ void Tablebases::rank_root_moves(Position& pos, Search::RootMoves& rootMoves) {
{
// Sort moves according to TB rank
std::sort(rootMoves.begin(), rootMoves.end(),
[](const RootMove &a, const RootMove &b) { return a.TBRank > b.TBRank; } );
[](const RootMove &a, const RootMove &b) { return a.tbRank > b.tbRank; } );
// Probe during search only if DTZ is not available and we are winning
if (dtz_available || rootMoves[0].TBScore <= VALUE_DRAW)
if (dtz_available || rootMoves[0].tbScore <= VALUE_DRAW)
Cardinality = 0;
}
else
{
// Assign the same rank to all moves
for (auto& m : rootMoves)
m.TBRank = 0;
m.tbRank = 0;
}
}