pow.cpp File Reference

#include <pow.h>
#include <arith_uint256.h>
#include <chain.h>
#include <primitives/block.h>
#include <uint256.h>
#include <util/check.h>

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Functions
unsigned int	GetNextWorkRequired (const CBlockIndex *pindexLast, const CBlockHeader *pblock, const Consensus::Params &params)
unsigned int	CalculateNextWorkRequired (const CBlockIndex *pindexLast, int64_t nFirstBlockTime, const Consensus::Params &params)
bool	PermittedDifficultyTransition (const Consensus::Params &params, int64_t height, uint32_t old_nbits, uint32_t new_nbits)
	Return false if the proof-of-work requirement specified by new_nbits at a given height is not possible, given the proof-of-work on the prior block as specified by old_nbits. More...
bool	CheckProofOfWork (uint256 hash, unsigned int nBits, const Consensus::Params &params)
	Check whether a block hash satisfies the proof-of-work requirement specified by nBits. More...
bool	CheckProofOfWorkImpl (uint256 hash, unsigned int nBits, const Consensus::Params &params)

Function Documentation

CalculateNextWorkRequired()

unsigned int CalculateNextWorkRequired	(	const CBlockIndex *	pindexLast,
		int64_t	nFirstBlockTime,
		const Consensus::Params &	params
	)

Definition at line 50 of file pow.cpp.

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CheckProofOfWork()

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

Check whether a block hash satisfies the proof-of-work requirement specified by nBits.

Definition at line 140 of file pow.cpp.

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CheckProofOfWorkImpl()

bool CheckProofOfWorkImpl	(	uint256	hash,
		unsigned int	nBits,
		const Consensus::Params &	params
	)

Definition at line 146 of file pow.cpp.

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GetNextWorkRequired()

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

Definition at line 14 of file pow.cpp.

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PermittedDifficultyTransition()

bool PermittedDifficultyTransition	(	const Consensus::Params &	params,
		int64_t	height,
		uint32_t	old_nbits,
		uint32_t	new_nbits
	)

Return false if the proof-of-work requirement specified by new_nbits at a given height is not possible, given the proof-of-work on the prior block as specified by old_nbits.

This function only checks that the new value is within a factor of 4 of the old value for blocks at the difficulty adjustment interval, and otherwise requires the values to be the same.

Always returns true on networks where min difficulty blocks are allowed, such as regtest/testnet.

Definition at line 89 of file pow.cpp.

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