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stronger lemmas to avoid branching

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-02-14 15:44:02 -08:00
parent 580ebead79
commit 63e62ec1bb
8 changed files with 156 additions and 62 deletions
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8
src/util/lp/lar_constraints.h
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@ -48,7 +48,7 @@ inline std::string lconstraint_kind_string(lconstraint_kind t) {
struct lar_base_constraint {
lconstraint_kind m_kind;
mpq m_right_side;
virtual vector<std::pair<mpq, var_index>> get_left_side_coefficients() const = 0;
virtual vector<std::pair<mpq, var_index>> coeffs() const = 0;
lar_base_constraint() {}
lar_base_constraint(lconstraint_kind kind, const mpq& right_side) :m_kind(kind), m_right_side(right_side) {}
@ -59,7 +59,7 @@ struct lar_base_constraint {
struct lar_var_constraint: public lar_base_constraint {
unsigned m_j;
vector<std::pair<mpq, var_index>> get_left_side_coefficients() const override {
vector<std::pair<mpq, var_index>> coeffs() const override {
vector<std::pair<mpq, var_index>> ret;
ret.push_back(std::make_pair(one_of_type<mpq>(), m_j));
return ret;
@ -71,7 +71,7 @@ struct lar_var_constraint: public lar_base_constraint {
struct lar_term_constraint: public lar_base_constraint {
const lar_term * m_term;
vector<std::pair<mpq, var_index>> get_left_side_coefficients() const override {
vector<std::pair<mpq, var_index>> coeffs() const override {
return m_term->coeffs_as_vector();
}
unsigned size() const override { return m_term->size();}
@ -95,6 +95,6 @@ public:
return static_cast<unsigned>(m_coeffs.size());
}
vector<std::pair<mpq, var_index>> get_left_side_coefficients() const override { return m_coeffs; }
vector<std::pair<mpq, var_index>> coeffs() const override { return m_coeffs; }
};
}