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propagate monics with lp_bound_propagator

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This commit is contained in:
Lev Nachmanson 2023-09-13 14:27:34 -07:00
parent c309d52283
commit cbad61ba2e
5 changed files with 74 additions and 64 deletions
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16
src/math/lp/implied_bound.h
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@ -20,18 +20,24 @@ Revision History:
#pragma once
#include "math/lp/lp_settings.h"
#include "math/lp/lar_constraints.h"
#include "math/lp/lar_solver.h"
namespace lp {
class implied_bound {
public:
mpq m_bound;
unsigned m_j; // the column for which the bound has been found
// It is either the column for which the bound has been found, or,
// in the case the column was created as
// the slack variable to a term, it is the term index.
// It is the same index that was returned by lar_solver::add_var(), or
// by lar_solver::add_term()
unsigned m_j;
bool m_is_lower_bound;
bool m_strict;
private:
std::function<u_dependency*(void)> m_explain_bound = nullptr;
std::function<u_dependency*(lar_solver&)> m_explain_bound = nullptr;
public:
u_dependency* explain() const { return m_explain_bound(); }
void set_explain(std::function<u_dependency*(void)> f) { m_explain_bound = f; }
u_dependency* explain(lar_solver& s) const { return m_explain_bound(s); }
void set_explain(std::function<u_dependency*(lar_solver&)> f) { m_explain_bound = f; }
lconstraint_kind kind() const {
lconstraint_kind k = m_is_lower_bound? GE : LE;
if (m_strict)
@ -43,7 +49,7 @@ class implied_bound {
unsigned j,
bool is_lower_bound,
bool is_strict,
std::function<u_dependency*(void)> get_dep):
std::function<u_dependency*(lar_solver&)> get_dep):
m_bound(a),
m_j(j),
m_is_lower_bound(is_lower_bound),