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ignore term's zero coefficients in add_monomial()

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-12-31 12:44:38 -08:00
parent 216affd852
commit ef39c4b533
1 changed files with 2 additions and 0 deletions
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2
src/util/lp/lar_term.h
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@ -29,6 +29,8 @@ class lar_term {
public: public:
lar_term() {} lar_term() {}
void add_monomial(const mpq& c, unsigned j) { void add_monomial(const mpq& c, unsigned j) {
if (c.is_zero())
return;
auto *e = m_coeffs.find_core(j); auto *e = m_coeffs.find_core(j);
if (e == nullptr) { if (e == nullptr) {
m_coeffs.insert(j, c); m_coeffs.insert(j, c);