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port Grobner, add fixed var dependency to Horner's scheme

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-10-17 12:07:15 -07:00
parent 628bbcc676
commit b3fc12ffdc
11 changed files with 70 additions and 43 deletions
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13
src/math/lp/nex_creator.cpp
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@ -561,17 +561,18 @@ void nex_creator::simplify_children_of_sum(ptr_vector<nex> & children) {
sort_join_sum(children);
}
bool all_factors_are_elementary(const nex_mul* a) {
bool have_no_scalars(const nex_mul* a) {
for (auto & p : *a)
if (!p.e()->is_elementary())
if (p.e()->is_scalar() && !to_scalar(p.e())->value().is_one())
return false;
return true;
}
bool have_no_scalars(const nex_mul* a) {
for (auto & p : *a)
if (p.e()->is_scalar() && !to_scalar(p.e())->value().is_one())
bool nex_mul::all_factors_are_elementary() const {
for (auto & p : *this)
if (!p.e()->is_elementary())
return false;
return true;
@ -587,7 +588,7 @@ nex * nex_creator::mk_div_sum_by_mul(const nex_sum* m, const nex_mul* b) {
}
nex * nex_creator::mk_div_mul_by_mul(const nex_mul *a, const nex_mul* b) {
SASSERT(all_factors_are_elementary(a) && all_factors_are_elementary(b));
SASSERT(a->all_factors_are_elementary() && b->all_factors_are_elementary());
b->get_powers_from_mul(m_powers);
nex_mul* ret = new nex_mul();
for (auto& p_from_a : *a) {