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Merge #9200: bench: Fix subtle counting issue when rescaling iteration count

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e0a9cb2 bench: Fix subtle counting issue when rescaling iteration count (Wladimir J. van der Laan)
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Wladimir J. van der Laan 2016-11-22 12:20:28 +01:00
commit 55b2eddcc8
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1 changed files with 5 additions and 2 deletions
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src/bench/bench.cpp
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@ -64,8 +64,11 @@ bool State::KeepRunning()
return true; return true;
} }
if (elapsed*16 < maxElapsed) { if (elapsed*16 < maxElapsed) {
countMask = ((countMask<<1)|1) & ((1LL<<60)-1); uint64_t newCountMask = ((countMask<<1)|1) & ((1LL<<60)-1);
countMaskInv = 1./(countMask+1); if ((count & newCountMask)==0) {
countMask = newCountMask;
countMaskInv = 1./(countMask+1);
}
} }
} }
lastTime = now; lastTime = now;