Merge pull request #4468

e11b2ce Fix large reorgs (Pieter Wuille)
afc32c5 Fix rebuild-chainstate feature and improve its performance (Pieter Wuille)
16d5194 Skip reindexed blocks individually (Pieter Wuille)
ad96e7c Make -reindex cope with out-of-order blocks (Wladimir J. van der Laan)
e17bd58 Rename setBlockIndexValid to setBlockIndexCandidates (Pieter Wuille)
1af838b Add height to "Requesting block" debug (R E Broadley)
1bcee67 Better logging of stalling (R E Broadley)
4c93322 Improve getheaders (sending) logging (R E Broadley)
f244c99 Remove CheckMinWork, as we always know all parent headers (Pieter Wuille)
ad6e601 RPC additions after headers-first (Pieter Wuille)
341735e Headers-first synchronization (Pieter Wuille)

1 files changed, 0 insertions, 33 deletions

diff --git a/src/pow.cpp b/src/pow.cpp
index d50222849..75fbfc6a6 100644
--- a/src/pow.cpp
+++ b/src/pow.cpp
@@ -98,39 +98,6 @@ bool CheckProofOfWork(uint256 hash, unsigned int nBits)
     return true;
 }
 
-//
-// true if nBits is greater than the minimum amount of work that could
-// possibly be required deltaTime after minimum work required was nBase
-//
-bool CheckMinWork(unsigned int nBits, unsigned int nBase, int64_t deltaTime)
-{
-    bool fOverflow = false;
-    uint256 bnNewBlock;
-    bnNewBlock.SetCompact(nBits, NULL, &fOverflow);
-    if (fOverflow)
-        return false;
-
-    const uint256 &bnLimit = Params().ProofOfWorkLimit();
-    // Testnet has min-difficulty blocks
-    // after Params().TargetSpacing()*2 time between blocks:
-    if (Params().AllowMinDifficultyBlocks() && deltaTime > Params().TargetSpacing()*2)
-        return bnNewBlock <= bnLimit;
-
-    uint256 bnResult;
-    bnResult.SetCompact(nBase);
-    while (deltaTime > 0 && bnResult < bnLimit)
-    {
-        // Maximum 400% adjustment...
-        bnResult *= 4;
-        // ... in best-case exactly 4-times-normal target time
-        deltaTime -= Params().TargetTimespan()*4;
-    }
-    if (bnResult > bnLimit)
-        bnResult = bnLimit;
-
-    return bnNewBlock <= bnResult;
-}
-
 void UpdateTime(CBlockHeader* pblock, const CBlockIndex* pindexPrev)
 {
     pblock->nTime = std::max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());