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port grobner basis

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-09-17 13:54:18 -07:00
parent 490672a5ba
commit cc5a12c5c7
9 changed files with 125 additions and 19 deletions
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57
src/math/lp/nla_grobner.cpp
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@ -127,6 +127,56 @@ void nla_grobner::init() {
find_nl_cluster();
}
equation* nla_grobner::pick_next() {
SASSERT(false);
return nullptr;
}
equation* nla_grobner::simplify_using_processed(equation* eq) {
SASSERT(false);
return nullptr;
}
equation* nla_grobner::simplify_processed(equation* eq) {
SASSERT(false);
return nullptr;
}
equation* nla_grobner::simplify_to_process(equation*) {
SASSERT(false);
return nullptr;
}
void nla_grobner::superpose(equation * eq1, equation * eq2) {
SASSERT(false);
}
void nla_grobner::superpose(equation * eq){
SASSERT(false);
}
bool nla_grobner::compute_basis_step() {
equation * eq = pick_next();
if (!eq)
return true;
m_stats.m_num_processed++;
equation * new_eq = simplify_using_processed(eq);
if (new_eq != nullptr && eq != new_eq) {
// equation was updated using non destructive updates
m_equations_to_unfreeze.push_back(eq);
eq = new_eq;
}
if (canceled()) return false;
if (!simplify_processed(eq)) return false;
superpose(eq);
m_processed.insert(eq);
simplify_to_process(eq);
TRACE("grobner", tout << "end of iteration:\n"; display(tout););
return false;
}
void nla_grobner::compute_basis(){
compute_basis_init();
if (!compute_basis_loop()) {
@ -135,12 +185,15 @@ void nla_grobner::compute_basis(){
}
void nla_grobner::compute_basis_init(){
c().lp_settings().stats().m_grobner_basis_computatins++;
m_num_new_equations = 0;
m_num_of_equations = 0;
}
bool nla_grobner::compute_basis_loop(){
SASSERT(false);
while (m_num_of_equations < c().m_nla_settings.grobner_eqs_threshold()) {
if (compute_basis_step())
return true;
}
return false;
}