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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-07-03 09:34:53 -07:00
parent c3ac079272
commit 4a94d13c4d
4 changed files with 66 additions and 6 deletions
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6
src/math/interval/mod_interval_def.h
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@ -133,7 +133,7 @@ mod_interval<Numeral>& mod_interval<Numeral>::intersect_ule(Numeral const& h) {
lo = 0, hi = h + 1;
else if (hi > lo && lo > h)
set_empty();
else if (hi != 0 || h + 1 < hi)
else if (hi == 0 || h + 1 < hi)
hi = h + 1;
return *this;
}
@ -146,7 +146,7 @@ mod_interval<Numeral>& mod_interval<Numeral>::intersect_uge(Numeral const& l) {
set_empty();
else if (is_free())
lo = l, hi = 0;
else if (lo < hi && lo < l)
else if ((lo < hi || hi == 0) && lo < l)
lo = l;
return *this;
}
@ -175,7 +175,7 @@ mod_interval<Numeral>& mod_interval<Numeral>::intersect_ugt(Numeral const& l) {
else if (is_free())
lo = l + 1, hi = 0;
else if (lo > l)
return;
return *this;
else if (lo < hi && hi <= l)
set_empty();
else if (lo < hi)