Monacoin: Zeitgeist2 bool fshift bnNew.bits()

monacoinproject · Aug 1, 2017 · 6d65019 · 6d65019
1 parent 80512c2
commit 6d65019
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/pow.cpp b/src/pow.cpp
@@ -245,15 +245,15 @@ unsigned int CalculateNextWorkRequired(const CBlockIndex* pindexLast, int64_t nF
     bnNew.SetCompact(pindexLast->nBits);
     bnOld = bnNew;
     // Monacoin: 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;
     bnNew /= targetTimespan;
     if (fShift)
         bnNew <<= 1;
 
-    const arith_uint256 bnPowLimit = UintToArith256(params.powLimit);
     if (bnNew > bnPowLimit)
         bnNew = bnPowLimit;