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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-05-13 17:23:55 -07:00
parent cf8b3a0788
commit 49a903c875
3 changed files with 16 additions and 5 deletions
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1
src/math/interval/mod_interval.h
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@ -61,6 +61,7 @@ public:
if (is_free()) return out << "free";
return out << "[" << pp(lo) << ", " << pp(hi) << "[";
}
Numeral closest_value(Numeral const& n) const;
};
template<typename Numeral>

11
src/math/interval/mod_interval_def.h
View file

@ -109,3 +109,14 @@ mod_interval<Numeral> mod_interval<Numeral>::operator&(mod_interval const& other
return mod_interval::empty();
return mod_interval(l, h);
}
template<typename Numeral>
Numeral mod_interval<Numeral>::closest_value(Numeral const& n) const {
if (contains(n))
return n;
if (is_empty())
return n;
if (lo - n < n - hi)
return lo;
return hi - 1;
}