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change try_patch to a template

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2020-05-26 14:29:58 -07:00
parent 18016a7100
commit 2710afbea1
3 changed files with 54 additions and 18 deletions
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36
src/math/lp/lar_solver.h
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@ -306,7 +306,41 @@ public:
bool column_corresponds_to_term(unsigned) const;
inline unsigned row_count() const { return A_r().row_count(); }
bool var_is_registered(var_index vj) const;
bool try_to_patch(lpvar, const mpq&, const std::function<bool (lpvar)>& blocker,const std::function<void (lpvar)>& change_report);
template <typename Blocker, typename ChangeReport>
bool try_to_patch(lpvar j, const mpq& val, const std::function<bool (lpvar)>& blocker,const std::function<void (lpvar)>& 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);
}
impq ival(val);
if (!inside_bounds(j, ival) || blocker(j))
return false;
impq delta = get_column_value(j) - ival;
for (const auto &c : A_r().column(j)) {
unsigned row_index = c.var();
const mpq & a = c.coeff();
unsigned rj = m_mpq_lar_core_solver.m_r_basis[row_index];
impq rj_new_val = a * delta + get_column_value(rj);
if (column_is_int(rj) && !rj_new_val.is_int())
return false;
if (!inside_bounds(rj, rj_new_val) || blocker(rj))
return false;
}
set_column_value(j, ival);
change_report(j);
for (const auto &c : A_r().column(j)) {
unsigned row_index = c.var();
const mpq & a = c.coeff();
unsigned rj = m_mpq_lar_core_solver.m_r_basis[row_index];
m_mpq_lar_core_solver.m_r_solver.add_delta_to_x(rj, a * delta);
change_report(rj);
}
return true;
}
inline bool column_has_upper_bound(unsigned j) const {
return m_mpq_lar_core_solver.m_r_solver.column_has_upper_bound(j);
}