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assignment helpers

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This commit is contained in:
Jakob Rath 2022-11-30 14:50:14 +01:00
parent 54a21e764d
commit 9b10733ebd
2 changed files with 17 additions and 0 deletions
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13
src/math/polysat/assignment.cpp
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@ -31,6 +31,11 @@ namespace polysat {
return p.subst_val(m_subst); return p.subst_val(m_subst);
} }
bool substitution::contains(pvar var) const {
rational out_value;
return value(var, out_value);
}
bool substitution::value(pvar var, rational& out_value) const { bool substitution::value(pvar var, rational& out_value) const {
return m_subst.subst_get(var, out_value); return m_subst.subst_get(var, out_value);
} }
@ -49,6 +54,14 @@ namespace polysat {
return a; return a;
} }
bool assignment::contains(pvar var) const {
return subst(s().size(var)).contains(var);
}
bool assignment::value(pvar var, rational& out_value) const {
return subst(s().size(var)).value(var, out_value);
}
substitution& assignment::subst(unsigned sz) { substitution& assignment::subst(unsigned sz) {
return const_cast<substitution&>(std::as_const(*this).subst(sz)); return const_cast<substitution&>(std::as_const(*this).subst(sz));
} }

4
src/math/polysat/assignment.h
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@ -56,6 +56,7 @@ namespace polysat {
substitution add(pvar var, rational const& value) const; substitution add(pvar var, rational const& value) const;
pdd apply_to(pdd const& p) const; pdd apply_to(pdd const& p) const;
bool contains(pvar var) const;
bool value(pvar var, rational& out_value) const; bool value(pvar var, rational& out_value) const;
bool empty() const { return m_subst.is_one(); } bool empty() const { return m_subst.is_one(); }
@ -96,6 +97,9 @@ namespace polysat {
pdd apply_to(pdd const& p) const; pdd apply_to(pdd const& p) const;
bool contains(pvar var) const;
bool value(pvar var, rational& out_value) const;
rational value(pvar var) const { rational val; VERIFY(value(var, val)); return val; }
bool empty() const { return pairs().empty(); } bool empty() const { return pairs().empty(); }
substitution const& subst(unsigned sz) const; substitution const& subst(unsigned sz) const;
vector<assignment_item_t> const& pairs() const { return m_pairs; } vector<assignment_item_t> const& pairs() const { return m_pairs; }