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Zawy12, reduce noise ave with bnPrev

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This commit is contained in:
jl777
2019-08-03 06:24:09 -11:00
parent 62a57c1ebd
commit 4fa1f639e2
1 changed files with 31 additions and 52 deletions
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83
src/pow.cpp
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@@ -100,11 +100,12 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
// Find the first block in the averaging interval
const CBlockIndex* pindexFirst = pindexLast;
arith_uint256 bnTmp,bnTarget,bnSum4 {0},bnSum7 {0},bnSum12 {0},bnTot {0};
arith_uint256 bnTmp,bnTarget,bnPrev {0},bnSum4 {0},bnSum7 {0},bnSum12 {0},bnTot {0};
uint32_t nbits,blocktime,block4diff=0,block7diff=0,block12diff=0; int32_t diff,mult = 0;
if ( ASSETCHAINS_ADAPTIVEPOW > 0 && pindexFirst != 0 && pblock != 0 )
{
mult = pblock->nTime - pindexFirst->nTime - 7 * ASSETCHAINS_BLOCKTIME;
bnPrev.SetCompact(pindexFirst->nBits);
//fprintf(stderr,"ht.%d mult.%d = (%u - %u - 7x)\n",pindexLast->GetHeight(),(int32_t)mult,pblock->nTime, pindexFirst->nTime);
}
for (int i = 0; pindexFirst && i < params.nPowAveragingWindow; i++)
@@ -148,7 +149,7 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
if (pindexFirst == NULL)
return nProofOfWorkLimit;
bool fNegative,fOverflow; int32_t flag; arith_uint256 easy,origtarget,bnAvg {bnTot / params.nPowAveragingWindow};
bool fNegative,fOverflow; arith_uint256 easy,origtarget,bnAvg {bnTot / params.nPowAveragingWindow};
nbits = CalculateNextWorkRequired(bnAvg, pindexLast->GetMedianTimePast(), pindexFirst->GetMedianTimePast(), params);
if ( ASSETCHAINS_ADAPTIVEPOW > 0 )
{
@@ -166,59 +167,37 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
}
else if ( block12diff != 0 && block7diff != 0 && block4diff != 0 )
{
flag = 0;
/*if ( block4diff >= 4 && block4diff < ASSETCHAINS_BLOCKTIME/3 )
if ( block12diff < ASSETCHAINS_BLOCKTIME*11 )
{
bnTarget /= arith_uint256(4);
flag = 4;
fprintf(stderr,"ht.%d 4 blocks happened in %d adjust by %.4f\n",(int32_t)pindexLast->GetHeight(),block4diff,0.25);
}
if ( block7diff >= 7 && block7diff < ASSETCHAINS_BLOCKTIME/2 )
{
bnTarget /= arith_uint256(7);
flag = 7;
fprintf(stderr,"ht.%d 7 blocks happened in %d adjust by %.4f\n",(int32_t)pindexLast->GetHeight(),block7diff,1./7);
}
if ( block12diff >= 12 && block12diff < ASSETCHAINS_BLOCKTIME )
{
bnTarget /= arith_uint256(12);
flag = 12;
fprintf(stderr,"ht.%d 12 blocks happened in %d adjust by %.4f\n",(int32_t)pindexLast->GetHeight(),block12diff,1./12);
}
else if ( flag == 0 )*/
{
if ( block12diff < ASSETCHAINS_BLOCKTIME*11 )
bnSum4 = zawy_targetMA(easy,bnSum4,4,block4diff * 5,1);
bnSum7 = zawy_targetMA(easy,bnSum7,7,block7diff * 3,1);
bnSum12 = zawy_targetMA(easy,bnSum12,12,block12diff * 2,1);
if ( bnSum4 < bnSum7 )
bnTmp = bnSum4;
else bnTmp = bnSum7;
if ( bnSum12 < bnTmp )
bnTmp = bnSum12;
if ( bnTmp < bnTarget )
{
bnSum4 = zawy_targetMA(easy,bnSum4,4,block4diff * 5,1);
bnSum7 = zawy_targetMA(easy,bnSum7,7,block7diff * 3,1);
bnSum12 = zawy_targetMA(easy,bnSum12,12,block12diff * 2,1);
if ( bnSum4 < bnSum7 )
bnTmp = bnSum4;
else bnTmp = bnSum7;
if ( bnSum12 < bnTmp )
bnTmp = bnSum12;
if ( bnTmp < bnTarget )
{
fprintf(stderr,"ht.%d block12diff %d < %d, make harder\n",(int32_t)pindexLast->GetHeight()+1,block12diff,ASSETCHAINS_BLOCKTIME*11);
bnTarget = bnTmp;
} //else fprintf(stderr,"nothing smaller\n");
}
else if ( block12diff > ASSETCHAINS_BLOCKTIME*13 )
fprintf(stderr,"ht.%d block12diff %d < %d, make harder\n",(int32_t)pindexLast->GetHeight()+1,block12diff,ASSETCHAINS_BLOCKTIME*11);
bnTarget = (bnTmp + bnPrev) / arith_uint256(2);
} //else fprintf(stderr,"nothing smaller\n");
}
else if ( block12diff > ASSETCHAINS_BLOCKTIME*13 )
{
bnSum4 = zawy_targetMA(easy,bnSum4,4,block4diff * 3,10);
bnSum7 = zawy_targetMA(easy,bnSum7,7,block7diff * 5,10);
bnSum12 = zawy_targetMA(easy,bnSum12,12,block12diff * 6,10);
if ( bnSum4 > bnSum7 )
bnTmp = bnSum4;
else bnTmp = bnSum7;
if ( bnSum12 > bnTmp )
bnTmp = bnSum12;
if ( bnTmp > bnTarget )
{
bnSum4 = zawy_targetMA(easy,bnSum4,4,block4diff * 3,10);
bnSum7 = zawy_targetMA(easy,bnSum7,7,block7diff * 5,10);
bnSum12 = zawy_targetMA(easy,bnSum12,12,block12diff * 6,10);
if ( bnSum4 > bnSum7 )
bnTmp = bnSum4;
else bnTmp = bnSum7;
if ( bnSum12 > bnTmp )
bnTmp = bnSum12;
if ( bnTmp > bnTarget )
{
fprintf(stderr,"ht.%d block12diff %d > %d, make easier\n",(int32_t)pindexLast->GetHeight()+1,block12diff,ASSETCHAINS_BLOCKTIME*13);
bnTarget = bnTmp;
} //else fprintf(stderr,"nothing bigger\n");
}
fprintf(stderr,"ht.%d block12diff %d > %d, make easier\n",(int32_t)pindexLast->GetHeight()+1,block12diff,ASSETCHAINS_BLOCKTIME*13);
bnTarget = (bnTmp + bnPrev) / arith_uint256(2);
} //else fprintf(stderr,"nothing bigger\n");
}
} // else fprintf(stderr,"null diff %d %d %d\n",block4diff,block7diff,block12diff);
nbits = bnTarget.GetCompact();