1 files changed, 5 insertions, 55 deletions

diff --git a/src/checkpoints.cpp b/src/checkpoints.cpp
index a9822eed8..5afe3e66b 100644
--- a/src/checkpoints.cpp
+++ b/src/checkpoints.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2009-2014 The Bitcoin Core developers
+// Copyright (c) 2009-2016 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -6,77 +6,27 @@
 
 #include "chain.h"
 #include "chainparams.h"
-#include "main.h"
+#include "reverse_iterator.h"
+#include "validation.h"
 #include "uint256.h"
 
 #include <stdint.h>
 
-#include <boost/foreach.hpp>
 
 namespace Checkpoints {
 
-    /**
-     * How many times slower we expect checking transactions after the last
-     * checkpoint to be (from checking signatures, which is skipped up to the
-     * last checkpoint). This number is a compromise, as it can't be accurate
-     * for every system. When reindexing from a fast disk with a slow CPU, it
-     * can be up to 20, while when downloading from a slow network with a
-     * fast multicore CPU, it won't be much higher than 1.
-     */
-    static const double SIGCHECK_VERIFICATION_FACTOR = 5.0;
-
-    //! Guess how far we are in the verification process at the given block index
-    double GuessVerificationProgress(const CCheckpointData& data, CBlockIndex *pindex, bool fSigchecks) {
-        if (pindex==NULL)
-            return 0.0;
-
-        int64_t nNow = time(NULL);
-
-        double fSigcheckVerificationFactor = fSigchecks ? SIGCHECK_VERIFICATION_FACTOR : 1.0;
-        double fWorkBefore = 0.0; // Amount of work done before pindex
-        double fWorkAfter = 0.0;  // Amount of work left after pindex (estimated)
-        // Work is defined as: 1.0 per transaction before the last checkpoint, and
-        // fSigcheckVerificationFactor per transaction after.
-
-        if (pindex->nChainTx <= data.nTransactionsLastCheckpoint) {
-            double nCheapBefore = pindex->nChainTx;
-            double nCheapAfter = data.nTransactionsLastCheckpoint - pindex->nChainTx;
-            double nExpensiveAfter = (nNow - data.nTimeLastCheckpoint)/86400.0*data.fTransactionsPerDay;
-            fWorkBefore = nCheapBefore;
-            fWorkAfter = nCheapAfter + nExpensiveAfter*fSigcheckVerificationFactor;
-        } else {
-            double nCheapBefore = data.nTransactionsLastCheckpoint;
-            double nExpensiveBefore = pindex->nChainTx - data.nTransactionsLastCheckpoint;
-            double nExpensiveAfter = (nNow - pindex->GetBlockTime())/86400.0*data.fTransactionsPerDay;
-            fWorkBefore = nCheapBefore + nExpensiveBefore*fSigcheckVerificationFactor;
-            fWorkAfter = nExpensiveAfter*fSigcheckVerificationFactor;
-        }
-
-        return fWorkBefore / (fWorkBefore + fWorkAfter);
-    }
-
-    int GetTotalBlocksEstimate(const CCheckpointData& data)
-    {
-        const MapCheckpoints& checkpoints = data.mapCheckpoints;
-
-        if (checkpoints.empty())
-            return 0;
-
-        return checkpoints.rbegin()->first;
-    }
-
     CBlockIndex* GetLastCheckpoint(const CCheckpointData& data)
     {
         const MapCheckpoints& checkpoints = data.mapCheckpoints;
 
-        BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, checkpoints)
+        for (const MapCheckpoints::value_type& i : reverse_iterate(checkpoints))
         {
             const uint256& hash = i.second;
             BlockMap::const_iterator t = mapBlockIndex.find(hash);
             if (t != mapBlockIndex.end())
                 return t->second;
         }
-        return NULL;
+        return nullptr;
     }
 
 } // namespace Checkpoints