cryptogera/litecoin
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Litecoin: Zeitgeist2 bool fshift bnNew.bits()

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romanornr 2017-07-08 12:10:01 +02:00
parent 50ebea09d7
commit 51a59d4bef
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1 changed files with 2 additions and 2 deletions
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src/pow.cpp
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@ -76,7 +76,8 @@ unsigned int CalculateNextWorkRequired(const CBlockIndex* pindexLast, int64_t nF
bnNew.SetCompact(pindexLast->nBits);
bnOld = bnNew;
// Litecoin: intermediate uint256 can overflow by 1 bit
bool fShift = bnNew.bits() > 235;
const arith_uint256 bnPowLimit = UintToArith256(params.powLimit);
bool fShift = bnNew.bits() > bnPowLimit.bits() - 1;
if (fShift)
bnNew >>= 1;
bnNew *= nActualTimespan;
@ -84,7 +85,6 @@ unsigned int CalculateNextWorkRequired(const CBlockIndex* pindexLast, int64_t nF
if (fShift)
bnNew <<= 1;
const arith_uint256 bnPowLimit = UintToArith256(params.powLimit);
if (bnNew > bnPowLimit)
bnNew = bnPowLimit;