pow.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// 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.
 
#ifndef BITCOIN_POW_POW_H
#define BITCOIN_POW_POW_H
 
#include <cstdint>
 
class arith_uint256;
struct BlockHash;
class CBlockHeader;
class CBlockIndex;
class CChainParams;
 
namespace Consensus {
struct Params;
}
 
uint32_t GetNextWorkRequired(const CBlockIndex *pindexPrev,
                             const CBlockHeader *pblock,
                             const CChainParams &chainParams);
 
bool CheckProofOfWork(const BlockHash &hash, uint32_t nBits,
                      const Consensus::Params &params);
 
bool PermittedDifficultyTransition(const Consensus::Params &params,
                                   int64_t height, uint32_t old_nbits,
                                   uint32_t new_nbits);
 
bool NBitsToTarget(const Consensus::Params &params, uint32_t nBits,
                   arith_uint256 &target);
 
#endif // BITCOIN_POW_POW_H