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cautious remove_basis

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2020-05-28 11:47:11 -07:00
parent 91d9b0319e
commit a6040a1f3d
5 changed files with 50 additions and 1 deletions
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3
src/math/lp/lar_solver.h
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@ -260,6 +260,7 @@ class lar_solver : public column_namer {
void update_delta_for_terms(const impq & delta, unsigned j, const vector<unsigned>&);
void fill_vars_to_terms(vector<vector<unsigned>> & vars_to_terms);
bool remove_from_basis(unsigned);
bool remove_from_basis(unsigned, const mpq&);
lar_term get_term_to_maximize(unsigned ext_j) const;
bool sum_first_coords(const lar_term& t, mpq & val) const;
void collect_rounded_rows_to_fix();
@ -361,7 +362,7 @@ public:
const ChangeReport& change_report) {
if (is_base(j)) {
TRACE("nla_solver", get_int_solver()->display_row_info(tout, row_of_basic_column(j)) << "\n";);
remove_from_basis(j);
remove_from_basis(j, val);
}
impq ival(val);