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jl777 5 years ago
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  1. 154
      src/pow.cpp

154
src/pow.cpp
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@ -95,74 +95,7 @@ bnTarget = RT_CST_RST (bnTarget, ts, cw, numerator, denominator, W, T, past);
#define T ASSETCHAINS_BLOCKTIME
#define K ((int64_t)1000000)
arith_uint256 RT_CST_RST_outer(int32_t height,uint32_t nTime,arith_uint256 bnTarget,uint32_t *ts,arith_uint256 *ct,int32_t numerator,int32_t denominator,int32_t W,int32_t past)
{
int64_t outerK; arith_uint256 mintarget = bnTarget / arith_uint256(2);
if ( (ts[0] - ts[W]) < (T * numerator)/denominator )
{
outerK = (K * (nTime-ts[0]) * (ts[0]-ts[W]) * denominator) / (numerator * (T * T));
if ( outerK < K )
{
bnTarget = ct[0] / arith_uint256(K);
bnTarget *= arith_uint256(outerK);
}
if ( bnTarget > mintarget )
bnTarget = mintarget;
{
int32_t z;
for (z=31; z>=0; z--)
fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[z]);
}
fprintf(stderr," ht.%d initial outerK.%lld %d * %d * %d / %d\n",height,(long long)outerK,(nTime-ts[0]),(ts[0]-ts[W]),denominator,numerator);
} //else fprintf(stderr,"ht.%d no outer trigger %d >= %d\n",height,(ts[0] - ts[W]),(T * numerator)/denominator);
return(bnTarget);
}
arith_uint256 RT_CST_RST_target(int32_t height,uint32_t nTime,arith_uint256 bnTarget,uint32_t *ts,arith_uint256 *ct,int32_t width)
{
int32_t i; int64_t innerK;
bnTarget = ct[0];
for (i=1; i<width; i++)
bnTarget += ct[i];
bnTarget /= arith_uint256((width+1) * K);
innerK = (K * (nTime-ts[0]) * (ts[0]-ts[width])) / (width * T * T);
bnTarget *= arith_uint256(innerK);
{
int32_t z;
for (z=31; z>=0; z--)
fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[z]);
}
fprintf(stderr," ht.%d innerK %lld (%d * %d) %u - %u width.%d\n",height,(long long)innerK,(nTime-ts[0]),(ts[0]-ts[width]),ts[0],ts[width],width);
return(bnTarget);
}
arith_uint256 RT_CST_RST_inner(int32_t height,uint32_t nTime,arith_uint256 bnTarget,uint32_t *ts,arith_uint256 *ct,int32_t numerator,int32_t denominator,int32_t W,int32_t past,int32_t outeri)
{
arith_uint256 bnTargetW,bnTargetwidth,bnTmp,mintarget; int32_t expected,factor,elapsed,width = outeri+W;
expected = (width+1) * T;
if ( (elapsed= (ts[0] - ts[width])) < expected )
{
if ( (factor= (expected - elapsed)/T) > 1 )
mintarget = (bnTarget / arith_uint256(factor));
else if ( factor == 1 )
mintarget = (bnTarget / arith_uint256(3)) * arith_uint256(2);
else mintarget = (bnTarget / arith_uint256(4)) * arith_uint256(3);
bnTargetW = RT_CST_RST_target(height,nTime,bnTarget,ts,ct,W);
bnTargetwidth = RT_CST_RST_target(height,nTime,bnTarget,ts,ct,width);
if ( bnTargetW < bnTargetwidth )
bnTmp = bnTargetW;
else bnTmp = bnTargetwidth;
if ( bnTmp < bnTarget )
bnTarget = bnTmp;
if ( 0 && factor > 1 )
bnTarget = (bnTarget / arith_uint256(3)) * arith_uint256(2);
if ( 1 && bnTarget > mintarget )
bnTarget = mintarget;
fprintf(stderr,"inner outeri.%d, width.%d %d vs %d, deficit %d factor.%d\n",outeri,width,(ts[0] - ts[width]),expected,expected - (ts[0] - ts[width]),factor);
}
return(bnTarget);
}
#ifdef original_algo
arith_uint256 oldRT_CST_RST(int32_t height,uint32_t nTime,arith_uint256 bnTarget,uint32_t *ts,arith_uint256 *ct,int32_t numerator,int32_t denominator,int32_t W,int32_t past)
{
//if (ts.size() < 2*W || ct.size() < 2*W ) { exit; } // error. a vector was too small
@ -230,6 +163,74 @@ arith_uint256 oldRT_CST_RST(int32_t height,uint32_t nTime,arith_uint256 bnTarget
}
return(bnTarget);
}
#endif
arith_uint256 RT_CST_RST_outer(int32_t height,uint32_t nTime,arith_uint256 bnTarget,uint32_t *ts,arith_uint256 *ct,int32_t numerator,int32_t denominator,int32_t W,int32_t past)
{
int64_t outerK; arith_uint256 mintarget = bnTarget / arith_uint256(2);
if ( (ts[0] - ts[W]) < (T * numerator)/denominator )
{
outerK = (K * (nTime-ts[0]) * (ts[0]-ts[W]) * denominator) / (numerator * (T * T));
if ( outerK < K )
{
bnTarget = ct[0] / arith_uint256(K);
bnTarget *= arith_uint256(outerK);
}
if ( bnTarget > mintarget )
bnTarget = mintarget;
{
int32_t z;
for (z=31; z>=0; z--)
fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[z]);
}
fprintf(stderr," ht.%d initial outerK.%lld %d * %d * %d / %d\n",height,(long long)outerK,(nTime-ts[0]),(ts[0]-ts[W]),denominator,numerator);
} //else fprintf(stderr,"ht.%d no outer trigger %d >= %d\n",height,(ts[0] - ts[W]),(T * numerator)/denominator);
return(bnTarget);
}
arith_uint256 RT_CST_RST_target(int32_t height,uint32_t nTime,arith_uint256 bnTarget,uint32_t *ts,arith_uint256 *ct,int32_t width)
{
int32_t i; int64_t innerK;
bnTarget = ct[0];
for (i=1; i<width; i++)
bnTarget += ct[i];
bnTarget /= arith_uint256((width+1) * K);
innerK = (K * (nTime-ts[0]) * (ts[0]-ts[width])) / (width * T * T);
bnTarget *= arith_uint256(innerK);
{
int32_t z;
for (z=31; z>=0; z--)
fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[z]);
}
fprintf(stderr," ht.%d innerK %lld (%d * %d) %u - %u width.%d\n",height,(long long)innerK,(nTime-ts[0]),(ts[0]-ts[width]),ts[0],ts[width],width);
return(bnTarget);
}
arith_uint256 RT_CST_RST_inner(int32_t height,uint32_t nTime,arith_uint256 bnTarget,uint32_t *ts,arith_uint256 *ct,int32_t numerator,int32_t denominator,int32_t W,int32_t past,int32_t outeri)
{
arith_uint256 bnTargetW,bnTargetwidth,bnTmp,mintarget; int32_t expected,factor,elapsed,width = outeri+W;
expected = (width+1) * T;
if ( (elapsed= (ts[0] - ts[width])) < expected )
{
mintarget = (bnTarget / arith_uint256(5)) * arith_uint256(4);
bnTargetW = RT_CST_RST_target(height,nTime,bnTarget,ts,ct,W);
bnTargetwidth = RT_CST_RST_target(height,nTime,bnTarget,ts,ct,width);
if ( bnTargetW < bnTargetwidth )
bnTmp = bnTargetW;
else bnTmp = bnTargetwidth;
if ( bnTmp < bnTarget )
bnTarget = bnTmp;
factor = (expected - elapsed) / T;
if ( factor > 2 )
bnTarget = (bnTarget / arith_uint256(3)) * arith_uint256(2);
else if ( factor == 2 )
bnTarget = (bnTarget / arith_uint256(4)) * arith_uint256(3);
if ( 1 && bnTarget > mintarget )
bnTarget = mintarget;
fprintf(stderr,"inner outeri.%d, width.%d %d vs %d, deficit %d factor.%d\n",outeri,width,(ts[0] - ts[width]),expected,expected - (ts[0] - ts[width]),factor);
}
return(bnTarget);
}
arith_uint256 zawy_targetMA(arith_uint256 easy,arith_uint256 bnSum,int32_t num,int32_t numerator,int32_t divisor)
{
@ -275,20 +276,6 @@ arith_uint256 zawy_ctB(arith_uint256 bnTarget,uint32_t solvetime)
return(bnTarget);
}
arith_uint256 zawy_ctBinv(arith_uint256 bnTarget,uint32_t solvetime)
{
int64_t num; arith_uint256 origtarget = bnTarget;
num = ((int64_t)1000 * solvetime * solvetime * 1000) / (T * T * 784);
if ( num > 1 )
{
bnTarget /= arith_uint256(num);
bnTarget *= arith_uint256(1000);
if ( bnTarget > origtarget )
bnTarget = origtarget;
}
return(bnTarget);
}
arith_uint256 zawy_TSA_EMA(int32_t height,int32_t tipdiff,arith_uint256 prevTarget,int32_t solvetime)
{
arith_uint256 A,B,C,bnTarget;
@ -423,7 +410,8 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
past = 30;
if ( zflags[0] == 0 )
{
bnTarget = RT_CST_RST_outer(height,pblock->nTime,bnTarget,ts,ct,1,2,3,past);
//bnTarget = RT_CST_RST_outer(height,pblock->nTime,bnTarget,ts,ct,1,2,3,past);
bnTarget = RT_CST_RST_outer(height,pblock->nTime,bnTarget,ts,ct,3,4,3,past);
if ( bnTarget < origtarget )
zawyflag = 2;
}

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