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Use a bit less code to calculate hashfull() (#1830)

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* Use a bit less code to calculate hashfull(). Change post increment to preincrement as is more standard
in the rest of stockfish.  Scale result so we report 100% instead of 99.9% when completely full.

No functional change.
This commit is contained in:
mstembera
2018-12-23 07:10:07 -08:00
committed by Marco Costalba
parent ae5d2c38e1
commit 656aad8b0c
1 changed files with 6 additions and 9 deletions
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15
src/tt.cpp
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@@ -85,7 +85,7 @@ void TranspositionTable::clear() {
std::vector<std::thread> threads;
for (size_t idx = 0; idx < Options["Threads"]; idx++)
for (size_t idx = 0; idx < Options["Threads"]; ++idx)
{
threads.emplace_back([this, idx]() {
@@ -148,12 +148,9 @@ TTEntry* TranspositionTable::probe(const Key key, bool& found) const {
int TranspositionTable::hashfull() const {
int cnt = 0;
for (int i = 0; i < 1000 / ClusterSize; i++)
{
const TTEntry* tte = &table[i].entry[0];
for (int j = 0; j < ClusterSize; j++)
if ((tte[j].genBound8 & 0xFC) == generation8)
cnt++;
}
return cnt;
for (int i = 0; i < 1000 / ClusterSize; ++i)
for (int j = 0; j < ClusterSize; ++j)
cnt += (table[i].entry[j].genBound8 & 0xFC) == generation8;
return cnt * 1000 / (ClusterSize * (1000 / ClusterSize));
}