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niil_solver basic case progress

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2018-08-24 19:57:03 +08:00
parent c1b976fbf4
commit 1fce8ee0b1
2 changed files with 94 additions and 42 deletions
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5
src/util/lp/explanation.h
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@ -21,14 +21,17 @@ Revision History:
namespace lp {
class explanation {
vector<std::pair<mpq, constraint_index>> m_explanation;
std::unordered_set<unsigned> m_set_of_ci;
public:
void clear() { m_explanation.clear(); }
void clear() { m_explanation.clear(); m_set_of_ci.clear(); }
vector<std::pair<mpq, constraint_index>>::const_iterator begin() const { return m_explanation.begin(); }
vector<std::pair<mpq, constraint_index>>::const_iterator end() const { return m_explanation.end(); }
void push_justification(constraint_index j, const mpq& v) {
m_explanation.push_back(std::make_pair(v, j));
}
void push_justification(constraint_index j) {
if (m_set_of_ci.find(j) != m_set_of_ci.end()) return;
m_set_of_ci.insert(j);
m_explanation.push_back(std::make_pair(one_of_type<mpq>(), j));
}
void reset() { m_explanation.reset(); }