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move the nex object creation from a row to nla_common

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-09-19 16:11:51 -07:00
parent a085edceff
commit a3d0372e3d
6 changed files with 50 additions and 51 deletions
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40
src/math/lp/nla_common.cpp
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@ -122,5 +122,45 @@ unsigned common::random() {
return c().random();
}
nex * common::nexvar(lpvar j, nex_creator& cn) const {
// todo: consider deepen the recursion
if (!c().is_monic_var(j))
return cn.mk_var(j);
const monic& m = c().emons()[j];
nex_mul * e = cn.mk_mul();
for (lpvar k : m.vars()) {
e->add_child(cn.mk_var(k));
CTRACE("nla_horner", c().is_monic_var(k), c().print_var(k, tout) << "\n";);
}
return e;
}
nex * common::nexvar(const rational & coeff, lpvar j, nex_creator& cn) const {
// todo: consider deepen the recursion
if (!c().is_monic_var(j))
return cn.mk_mul(cn.mk_scalar(coeff), cn.mk_var(j));
const monic& m = c().emons()[j];
nex_mul * e = cn.mk_mul(cn.mk_scalar(coeff));
for (lpvar k : m.vars()) {
e->add_child(cn.mk_var(k));
CTRACE("nla_horner", c().is_monic_var(k), c().print_var(k, tout) << "\n";);
}
return e;
}
template <typename T> void common::create_sum_from_row(const T& row, nex_creator& cn, nex_sum& sum) {
TRACE("nla_horner", tout << "row="; m_core->print_term(row, tout) << "\n";);
SASSERT(row.size() > 1);
sum.children().clear();
for (const auto &p : row) {
if (p.coeff().is_one())
sum.add_child(nexvar(p.var(), cn));
else {
sum.add_child(nexvar(p.coeff(), p.var(), cn));
}
}
}
}
template void nla::common::create_sum_from_row<old_vector<lp::row_cell<rational>, true, unsigned int> >(old_vector<lp::row_cell<rational>, true, unsigned int> const&, nla::nex_creator&, nla::nex_sum&);