virtual void VisitFunction( const SymbolicFunction &v)
{
bool _hasfrac = hasfrac;
std::string op = v.GetOp();
if (op == "pow" && v.last_arg() < 0) {
_hasfrac = true;
if (frp != 0) *frp = v;
}
else {
SymbolicFunction::const_iterator p = v.args_begin();
for ( ; p != v.args_end(); ++p) {
if (operator()(*p, inp, frp)) {
_hasfrac = true;
break;
}
}
if (p == v.args_end()) {
if (inp != 0) *inp = v;
}
else {
if (inp == 0 && frp == 0)
return;
SymbolicFunction::Arguments inargs, frargs;
SymbolicFunction::const_iterator q = v.args_begin();
for ( ; q != p ; ++q) {
if (inp != 0)
inargs.push_back(*q);
if (frp != 0)
frargs.push_back(*q);
}
if (inp != 0)
inargs.push_back(*inp);
if (frp != 0)
frargs.push_back(*frp);
for (++q; q != v.args_end(); ++q) {
SymbolicVal cur = *q;
if (operator()(v, inp, frp)) {
if (inp != 0)
inargs.push_back(*inp);
if (frp != 0)
frargs.push_back(*frp);
}
else {
if (inp != 0)
inargs.push_back(cur);
if (frp != 0)
frargs.push_back(cur);
}
}
if (inp != 0)
*inp = v.cloneFunction(inargs);
if (frp != 0)
*frp = v.cloneFunction(frargs);
}
}
hasfrac = _hasfrac;
}
void VisitFunction( const SymbolicFunction &v)
{
if (target.GetValType() == VAL_FUNCTION && cur == target)
result = true;
else {
for (SymbolicFunction::const_iterator p = v.args_begin();
p != v.args_end(); ++p) {
SymbolicVal tmp = *p;
cur = tmp;
cur.Visit(this);
if ( result)
break;
}
}
}