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make sure that the returned cross nested form is equal to the original

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-08-19 14:09:41 -07:00
parent 41064f2b25
commit 4e59976c2f
2 changed files with 27 additions and 4 deletions
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9
src/math/lp/nex.h
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@ -82,6 +82,9 @@ public:
};
#if Z3DEBUG
bool operator<(const nex& a , const nex& b);
inline bool operator ==(const nex& a , const nex& b) {
return ! (a < b || b < a) ;
}
#endif
std::ostream& operator<<(std::ostream& out, const nex&);
@ -133,6 +136,8 @@ static void promote_children_by_type(ptr_vector<nex> * children, expr_type t) {
}
}
}
children->shrink(children->size() - to_promote.size());
for (nex *e : to_promote) {
for (nex *ee : *(e->children_ptr())) {
@ -218,7 +223,9 @@ public:
}
void simplify() {
TRACE("nla_cn_details", tout << *this << "\n";);
promote_children_by_type(&m_children, expr_type::MUL);
TRACE("nla_cn_details", tout << *this << "\n";);
}
#ifdef Z3DEBUG
virtual void sort() {
@ -377,7 +384,7 @@ inline bool operator<(const nex& a , const nex& b) {
return to_mul(&a)->children() < to_mul(&b)->children();
}
case expr_type::SUM: {
return to_mul(&a)->children() < to_mul(&b)->children();
return to_sum(&a)->children() < to_sum(&b)->children();
}
default:
SASSERT(false);