public uint NBitcoinStyle_CalculateNextWorkRequired(BlockHeader header, uint lastRetargetTime)
{
if (_nbitcoin_consensus.PowNoRetargeting)
{
return(header.Bits);
}
// Limit adjustment step
var nActualTimespan = TimeSpan.FromSeconds(header.TimeStamp - lastRetargetTime);
if (nActualTimespan < TimeSpan.FromTicks(_nbitcoin_consensus.PowTargetTimespan.Ticks / 4))
{
nActualTimespan = TimeSpan.FromTicks(_nbitcoin_consensus.PowTargetTimespan.Ticks / 4);
}
if (nActualTimespan > TimeSpan.FromTicks(_nbitcoin_consensus.PowTargetTimespan.Ticks * 4))
{
nActualTimespan = TimeSpan.FromTicks(_nbitcoin_consensus.PowTargetTimespan.Ticks * 4);
}
// Retarget
var bnNew = new NBitcoin_Target(header.Bits).ToBigInteger();
var cmp = new NBitcoin_Target(bnNew).ToCompact();
bnNew = bnNew * (new BigInteger((long)nActualTimespan.TotalSeconds));
bnNew = bnNew / (new BigInteger((long)_nbitcoin_consensus.PowTargetTimespan.TotalSeconds));
var newTarget = new NBitcoin_Target(bnNew);
if (newTarget > _nbitcoin_consensus.PowLimit)
{
newTarget = _nbitcoin_consensus.PowLimit;
}
return(newTarget.ToCompact());
}
public NBitcoin.Target NBitcoinCalculateNextWorkRequired(BlockHeader header, uint lastRetargetTime)
{
NBitcoin.Consensus consensus = NBitcoin.Network.Main.Consensus;
// Limit adjustment step
var nActualTimespan = TimeSpan.FromSeconds(header.TimeStamp - lastRetargetTime);
if (nActualTimespan < TimeSpan.FromTicks(consensus.PowTargetTimespan.Ticks / 4))
{
nActualTimespan = TimeSpan.FromTicks(consensus.PowTargetTimespan.Ticks / 4);
}
if (nActualTimespan > TimeSpan.FromTicks(consensus.PowTargetTimespan.Ticks * 4))
{
nActualTimespan = TimeSpan.FromTicks(consensus.PowTargetTimespan.Ticks * 4);
}
// Retarget
var bnNew = new NBitcoin.Target(header.Bits).ToBigInteger();
uint cmp = new NBitcoin.Target(bnNew).ToCompact();
bnNew = bnNew * (new BigInteger((long)nActualTimespan.TotalSeconds));
bnNew = bnNew / (new BigInteger((long)consensus.PowTargetTimespan.TotalSeconds));
var newTarget = new NBitcoin.Target(bnNew);
if (newTarget > consensus.PowLimit)
{
newTarget = consensus.PowLimit;
}
return(newTarget);
}
public void Setup()
{
_t1 = new MS_Target(_perfectCompactValue);
_nt1 = new NBitcoin_Target(_perfectCompactValue);
_header = new BlockHeader
{
TimeStamp = _blockTime,
Bits = _bits
};
}
public void NBitcoinCalculateNextWorkRequiredTest(uint lastRetargetTime, int height, uint blockTime, uint bits, uint expectedResult)
{
var header = new BlockHeader
{
TimeStamp = blockTime,
Bits = bits
};
NBitcoin.Target result = NBitcoinCalculateNextWorkRequired(header, lastRetargetTime);
Assert.Equal(expectedResult, result.ToCompact());
}
