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small improvements in tableau in rows and bound propagation

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2020-04-13 11:54:52 -07:00
parent 90793931b1
commit 7caae3f5d2
4 changed files with 49 additions and 7 deletions
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11
src/math/lp/lar_solver.cpp
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@ -153,11 +153,20 @@ void lar_solver::analyze_new_bounds_on_row(
ra_pos.analyze();
}
bool lar_solver::row_has_a_big_num(unsigned i) const {
for (const auto& c : A_r().m_rows[i]) {
if (c.coeff().is_big())
return true;
}
return false;
}
void lar_solver::analyze_new_bounds_on_row_tableau(
unsigned row_index,
lp_bound_propagator & bp ) {
if (A_r().m_rows[row_index].size() > settings().max_row_length_for_bound_propagation)
if (A_r().m_rows[row_index].size() > settings().max_row_length_for_bound_propagation
|| row_has_a_big_num(row_index))
return;
lp_assert(use_tableau());
bound_analyzer_on_row<row_strip<mpq>>::analyze_row(A_r().m_rows[row_index],