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fix in m_cg_table.find()

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-04-25 17:50:06 -07:00
parent 8303d8c9ae
commit bdabd52fb9
3 changed files with 17 additions and 23 deletions
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21
src/util/lp/emonomials.cpp
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@ -134,26 +134,13 @@ namespace nla {
monomial const* emonomials::find_canonical(svector<lpvar> const& vars) const {
SASSERT(m_ve.is_root(vars));
// find a unique key for dummy monomial
lpvar v = m_var2index.size();
for (unsigned i = 0; i < m_var2index.size(); ++i) {
if (m_var2index[i] == UINT_MAX) {
v = i;
break;
}
}
unsigned idx = m_monomials.size();
m_monomials.push_back(monomial(v, vars, idx));
m_var2index.setx(v, idx, UINT_MAX);
do_canonize(m_monomials[idx]);
m_find_key = vars;
std::sort(m_find_key.begin(), m_find_key.end());
monomial const* result = nullptr;
lpvar w;
if (m_cg_table.find(v, w)) {
SASSERT(w != v);
lpvar w;
if (m_cg_table.find(UINT_MAX, w)) {
result = &m_monomials[m_var2index[w]];
}
m_var2index[v] = UINT_MAX;
m_monomials.pop_back();
return result;
}