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apply the slack idea in a loop

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2025-05-05 16:21:37 -07:00 • committed by Lev Nachmanson
parent e041fe95bc
commit c81eb74c93
2 changed files with 70 additions and 39 deletions
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14
src/math/lp/lar_solver.h
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@ -47,7 +47,7 @@ namespace lp {
class int_branch;
class int_solver;
struct imp;
class lar_solver : public column_namer {
struct term_hasher {
@ -73,13 +73,7 @@ class lar_solver : public column_namer {
}
};
struct column_update {
bool m_is_upper;
unsigned m_j;
impq m_bound;
column m_column;
};
struct column_update_trail;
//////////////////// fields //////////////////////////
trail_stack m_trail;
@ -94,7 +88,6 @@ class lar_solver : public column_namer {
bool m_need_register_terms = false;
var_register m_var_register;
svector<column> m_columns;
vector<column_update> m_column_updates;
constraint_set m_constraints;
// the set of column indices j such that bounds have changed for j
@ -123,6 +116,7 @@ class lar_solver : public column_namer {
map<mpq, unsigned, obj_hash<mpq>, default_eq<mpq>> m_fixed_var_table_real;
// the set of fixed variables which are also base variables
indexed_uint_set m_fixed_base_var_set;
imp* m_imp;
// end of fields
////////////////// nested structs /////////////////////////
@ -742,5 +736,7 @@ public:
std::function<void (const indexed_uint_set& columns_with_changed_bound)> m_find_monics_with_changed_bounds_func = nullptr;
friend int_solver;
friend int_branch;
friend imp;
};
} // namespace lp