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DoC: fix fast_empty() for tables without columns

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Signed-off-by: Nuno Lopes <a-nlopes@microsoft.com>
This commit is contained in:
Nuno Lopes 2015-01-28 11:38:26 +00:00
parent 9e447281ed
commit 1701af9dc9
2 changed files with 2 additions and 2 deletions
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2
src/muz/rel/udoc_relation.cpp
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@ -1127,7 +1127,7 @@ namespace datalog {
// fast_pass(t, n);
}
*/
if (n.get_signature().size() == 0)
if (n.get_signature().empty())
t.get_udoc().reset(t.get_dm());
else if (m_is_subtract)
t.get_udoc().subtract(t.get_dm(), n.get_udoc());

2
src/muz/rel/udoc_relation.h
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@ -48,7 +48,7 @@ namespace datalog {
virtual udoc_relation * complement(func_decl*) const;
virtual void to_formula(expr_ref& fml) const;
udoc_plugin& get_plugin() const;
virtual bool fast_empty() const { return !get_signature().empty() && m_elems.is_empty(); }
virtual bool fast_empty() const { return m_elems.is_empty(); }
virtual bool empty() const;
virtual void display(std::ostream& out) const;
virtual bool is_precise() const { return true; }