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replace graph by a tree in cheap_eqs

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2020-06-03 17:15:15 -07:00
parent 5d3070bc2d
commit 62bd19242e
5 changed files with 169 additions and 135 deletions
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2
src/math/lp/numeric_pair.h
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@ -147,6 +147,8 @@ struct numeric_pair {
template <typename X, typename Y>
numeric_pair(X xp, Y yp) : x(convert_struct<T, X>::convert(xp)), y(convert_struct<T, Y>::convert(yp)) {}
unsigned hash() const { return combine_hash(x.hash(), y.hash()); }
bool operator<(const T& a) const {
return x < a || (x == a && y < 0);
}