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debug order lemma, introduce sign for factors

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-05-05 11:12:50 -07:00
parent 218e155603
commit 54ba889b7b
8 changed files with 85 additions and 301 deletions
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11
src/util/lp/factorization.h
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@ -27,14 +27,16 @@ namespace nla {
struct factorization_factory;
typedef unsigned lpvar;
enum class factor_type { VAR, RM }; // RM stands for rooted monomial
enum class factor_type { VAR, MON };
class factor {
lpvar m_var;
factor_type m_type;
bool m_sign;
public:
factor(): m_var(UINT_MAX), m_type(factor_type::VAR) {}
explicit factor(lpvar v, factor_type t) : m_var(v), m_type(t) {}
factor(): factor(false) {}
factor(bool sign): m_var(UINT_MAX), m_type(factor_type::VAR), m_sign(sign) {}
explicit factor(lpvar v, factor_type t) : m_var(v), m_type(t), m_sign(false) {}
unsigned var() const { return m_var; }
factor_type type() const { return m_type; }
void set(lpvar v, factor_type t) { m_var = v; m_type = t; }
@ -45,6 +47,9 @@ public:
bool operator!=(factor const& other) const {
return m_var != other.var() || m_type != other.type();
}
bool sign() const { return m_sign; }
bool& sign() { return m_sign; }
rational rsign() const { return m_sign? rational(-1) : rational(1); }
};