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work on tighten_with_S

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2024-09-04 09:20:21 -07:00 • committed by Lev Nachmanson
parent f0b5cd1066
commit 1408fe60ab
2 changed files with 158 additions and 48 deletions
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18
src/math/lp/lar_term.h
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@ -59,7 +59,6 @@ public:
}
}
void add_var(lpvar j) {
rational c(1);
add_monomial(c, j);
@ -71,10 +70,15 @@ public:
unsigned size() const { return static_cast<unsigned>(m_coeffs.size()); }
u_map<mpq> const & coeffs() const {
u_map<mpq> const &coeffs() const {
return m_coeffs;
}
u_map<mpq> &coeffs() {
return m_coeffs;
}
void subst_by_term(const lar_term& t, unsigned term_column) {
auto it = this->m_coeffs.find_core(term_column);
if (it == nullptr) return;
@ -138,6 +142,16 @@ public:
SASSERT(it != nullptr);
return it->get_data().m_value;
}
mpq & get_coeff(unsigned j){
auto* it = m_coeffs.find_core(j);
SASSERT(it != nullptr);
return it->get_data().m_value;
}
void erase_var(unsigned j) {
m_coeffs.erase(j);
}
// the monomial ax[j] is substituted by ax[k]
void subst_index(unsigned j, unsigned k) {
auto* it = m_coeffs.find_core(j);