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Bugfix: avoid sub-cent change (lost in fees) whenever possible

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Luke Dashjr 2011-01-28 14:39:31 -05:00 committed by tcatm
parent 6665aca024
commit a14bf1946d
1 changed files with 17 additions and 7 deletions
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24
main.cpp
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@ -3750,16 +3750,16 @@ bool SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<
int64 n = pcoin->GetCredit(); int64 n = pcoin->GetCredit();
if (n <= 0) if (n <= 0)
continue; continue;
if (n < nTargetValue) if (n == nTargetValue)
{
vValue.push_back(make_pair(n, pcoin));
nTotalLower += n;
}
else if (n == nTargetValue)
{ {
setCoinsRet.insert(pcoin); setCoinsRet.insert(pcoin);
return true; return true;
} }
else if (n < nTargetValue + CENT)
{
vValue.push_back(make_pair(n, pcoin));
nTotalLower += n;
}
else if (n < nLowestLarger) else if (n < nLowestLarger)
{ {
nLowestLarger = n; nLowestLarger = n;
@ -3768,7 +3768,14 @@ bool SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<
} }
} }
if (nTotalLower < nTargetValue) if (nTotalLower == nTargetValue || nTotalLower == nTargetValue + CENT)
{
for (int i = 0; i < vValue.size(); ++i)
setCoinsRet.insert(vValue[i].second);
return true;
}
if (nTotalLower < nTargetValue + (pcoinLowestLarger ? CENT : 0))
{ {
if (pcoinLowestLarger == NULL) if (pcoinLowestLarger == NULL)
return false; return false;
@ -3776,6 +3783,9 @@ bool SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<
return true; return true;
} }
if (nTotalLower >= nTargetValue + CENT)
nTargetValue += CENT;
// Solve subset sum by stochastic approximation // Solve subset sum by stochastic approximation
sort(vValue.rbegin(), vValue.rend()); sort(vValue.rbegin(), vValue.rend());
vector<char> vfIncluded; vector<char> vfIncluded;