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look expressions in terms at the beginning

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-08-01 09:28:06 -07:00
parent 8d05894db7
commit 7cd90537c3
1 changed files with 28 additions and 22 deletions
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50
src/math/lp/lar_solver.h
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@ -47,16 +47,20 @@ namespace lp {
class lar_solver : public column_namer {
#if Z3DEBUG_CHECK_UNIQUE_TERMS
struct term_hasher {
std::size_t operator()(const lar_term *t) const
{
{
using std::size_t;
using std::hash;
using std::string;
size_t seed = 0;
for (const auto& p : t->m_coeffs) {
hash_combine(seed, p);
int i = 0;
for (const auto& p : t->coeffs()) {
hash_combine(seed, p.m_key);
hash_combine(seed, p.m_value);
if (i++ > 10)
break;
}
return seed;
}
@ -65,27 +69,29 @@ class lar_solver : public column_namer {
struct term_ls_comparer {
bool operator()(const lar_term *a, const lar_term* b) const
{
// a is contained in b
for (auto & p : a->m_coeffs) {
auto t = b->m_coeffs.find(p.first);
if (t == b->m_coeffs.end())
return false;
if (p.second != t->second)
return false;
}
// zz is contained in b
for (auto & p : b->m_coeffs) {
auto t = a->m_coeffs.find(p.first);
if (t == a->m_coeffs.end())
return false;
if (p.second != t->second)
return false;
}
return true;
return a->coeffs() == b->coeffs();
// // a is contained in b
// for (auto & p : a->coeffs()) {
// auto t = b->coeffs().find_iterator(p.m_key);
// if (t == b->coeffs().end())
// return false;
// if (p.m_value != t->m_value)
// return false;
// }
// // zz is contained in b
// for (auto & p : b->coeffs()) {
// auto t = a->coeffs().find_iterator(p.m_key);
// if (t == a->coeffs().end())
// return false;
// if (p.m_value != t->m_value)
// return false;
// }
// return true;
}
};
std::unordered_set<lar_term*, term_hasher, term_ls_comparer> m_set_of_terms;
#endif
//////////////////// fields //////////////////////////
std::unordered_set<unsigned> m_cube_rounded_columns;