bool
ValHeap::
upheap(int pos)
{
if(print) cerr << "in Upheap " << pos << " " << array.size() << endl;
if(pos == 0) return false;
Val* atp = array[pos];
assert(atp);
double merit = atp->fom();
int parPos = parent(pos);
Val* par = array[parPos];
double pmerit = par->fom();
if(print) cerr << "merits " << merit << " " << pmerit<< endl;
if(merit > pmerit)
{
array[parPos] = atp;
array[pos] = par;
if(print) cerr << "Put " << pos << " in " << parPos << endl;
upheap(parPos);
return true;
}
else if(print)
{
cerr << "upheap of " << merit << "stopped by "
<< parPos << " " << pmerit << endl;
}
return false;
}
void
ValHeap::
downHeap(int pos)
{
if(print) cerr << "downHeap " << pos << endl;
if(pos >= unusedPos_-1) return;
Val* par = array[pos];
double merit = par->fom();
int lc = left_child(pos);
int rc = right_child(pos);
int largec;
int lcthere = 0;
Val* lct = NULL;
if(lc < unusedPos_)
{
lct = array[lc];
if(lct) lcthere = 1;
}
int rcthere = 0;
Val* rct = NULL;
if(rc < unusedPos_)
{
rct = array[rc];
if(rct) rcthere = 1;
}
if(!lcthere && !rcthere) return;
assert(lcthere);
if(!rcthere || (lct->fom() > rct->fom()))
largec = lc;
else largec = rc;
Val* largeatp = array[largec];
if(merit >= largeatp->fom())
{
if(print) cerr << "downheap of " << merit << " stopped by "
<< " " << largeatp->fom() << endl;
return;
}
array[pos] = largeatp;
array[largec] = par;
downHeap(largec);
}
