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simplify factorization

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Signed-off-by: Lev <levnach@hotmail.com>
This commit is contained in:
Lev 2018-11-26 08:08:42 -08:00 • committed by Lev Nachmanson
parent 667d1be8c3
commit aefd7eefb6
3 changed files with 15 additions and 22 deletions
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16
src/util/lp/factorization.h
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@ -75,27 +75,23 @@ struct const_iterator_mon {
};
struct factorization_factory {
// returns true if found
const svector<lpvar>& m_vars;
// returns true if found
virtual bool find_monomial_of_vars(const svector<lpvar>& vars, monomial& m, rational & sign) const = 0;
unsigned m_i_mon;
const monomial& m_mon;
monomial_coeff m_cmon;
factorization_factory(unsigned i_mon, const monomial& mon, const monomial_coeff& cmon) :
m_i_mon(i_mon),
m_mon(mon),
m_cmon(cmon) {
factorization_factory(const svector<lpvar>& vars) :
m_vars(vars) {
}
const_iterator_mon begin() const {
// we keep the last element always in the first factor to avoid
// repeating a pair twice
svector<bool> mask(m_mon.vars().size() - 1, false);
svector<bool> mask(m_vars.size() - 1, false);
return const_iterator_mon(mask, this);
}
const_iterator_mon end() const {
svector<bool> mask(m_mon.vars().size() - 1, true);
svector<bool> mask(m_vars.size() - 1, true);
auto it = const_iterator_mon(mask, this);
it.m_full_factorization_returned = true;
return it;