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Remove 'update gains' hack

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Use (move != MOVE_NONE) condition to
filtering out updating gains at root.

bench: 8454456
This commit is contained in:
Marco Costalba
2014-06-06 11:10:40 +02:00
parent 2f75639485
commit d10ae90dea
1 changed files with 1 additions and 1 deletions
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2
src/search.cpp
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@@ -270,7 +270,6 @@ namespace {
Value bestValue, alpha, beta, delta; Value bestValue, alpha, beta, delta;
std::memset(ss-2, 0, 5 * sizeof(Stack)); std::memset(ss-2, 0, 5 * sizeof(Stack));
(ss-1)->currentMove = MOVE_NULL; // Hack to skip update gains
depth = 0; depth = 0;
BestMoveChanges = 0; BestMoveChanges = 0;
@@ -553,6 +552,7 @@ namespace {
&& ss->staticEval != VALUE_NONE && ss->staticEval != VALUE_NONE
&& (ss-1)->staticEval != VALUE_NONE && (ss-1)->staticEval != VALUE_NONE
&& (move = (ss-1)->currentMove) != MOVE_NULL && (move = (ss-1)->currentMove) != MOVE_NULL
&& move != MOVE_NONE
&& type_of(move) == NORMAL) && type_of(move) == NORMAL)
{ {
Square to = to_sq(move); Square to = to_sq(move);