pow.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2017 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 FABCOIN_POW_H
#define FABCOIN_POW_H

#include <consensus/params.h>
#include <arith_uint256.h>
#include <stdint.h>

class CBlockHeader;
class CBlockIndex;
class CChainParams;
class uint256;

unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock, const Consensus::Params&);
unsigned int CalculateNextWorkRequired(arith_uint256 bnAvg, int64_t nLastBlockTime, int64_t nFirstBlockTime, const Consensus::Params& params);

unsigned int LwmaGetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock, const Consensus::Params&);
unsigned int LwmaCalculateNextWorkRequired(const CBlockIndex* pindexLast, const Consensus::Params& params);

unsigned int DigishieldGetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock, const Consensus::Params&);
unsigned int DigishieldCalculateNextWorkRequired(const CBlockIndex* pindexLast, arith_uint256 bnAvg, int64_t nLastBlockTime, int64_t nFirstBlockTime, const Consensus::Params& params);

unsigned int ReduceDifficultyBy(const CBlockIndex* pindexLast, int64_t multiplier, const Consensus::Params& params);

bool CheckEquihashSolution(const CBlockHeader *pblock, const CChainParams&);

bool CheckProofOfWork(uint256 hash, unsigned int nBits, bool postfork, const Consensus::Params&);

#endif // FABCOIN_POW_H