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work on horner

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-07-02 10:37:41 -07:00
parent c040a0b9a5
commit e3a8522885
4 changed files with 76 additions and 80 deletions
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58
src/math/lp/nla_intervals.cpp
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@ -45,13 +45,13 @@ void intervals::set_var_interval_signs(lpvar v, interval& b) const {
m_config.set_upper_is_inf(b, true);
}
}
void intervals::set_var_interval_signs_with_deps(lpvar v, interval& b) const {
*/
void intervals::set_var_interval_with_deps(lpvar v, interval& b) {
lp::constraint_index ci;
rational val;
bool is_strict;
if (ls().has_lower_bound(v, ci, val, is_strict)) {
m_config.set_lower(b, sign(val));
m_config.set_lower(b, val);
m_config.set_lower_is_open(b, is_strict);
m_config.set_lower_is_inf(b, false);
b.m_lower_dep = mk_dep(ci);
@ -62,7 +62,7 @@ void intervals::set_var_interval_signs_with_deps(lpvar v, interval& b) const {
b.m_lower_dep = nullptr;
}
if (ls().has_upper_bound(v, ci, val, is_strict)) {
m_config.set_upper(b, sign(val));
m_config.set_upper(b, val);
m_config.set_upper_is_open(b, is_strict);
m_config.set_upper_is_inf(b, false);
b.m_upper_dep = mk_dep(ci);
@ -78,7 +78,7 @@ intervals::ci_dependency *intervals::mk_dep(lp::constraint_index ci) const {
return m_dep_manager.mk_leaf(ci);
}
*/
std::ostream& intervals::display(std::ostream& out, const interval& i) const {
if (m_imanager.lower_is_inf(i)) {
out << "(-oo";
@ -94,46 +94,18 @@ std::ostream& intervals::display(std::ostream& out, const interval& i) const {
return out;
}
/*
intervals::interval intervals::mul(const svector<lpvar>& vars) const {
interval a;
m_imanager.set(a, mpq(1));
for (lpvar j : vars) {
interval b, c;
set_var_interval(j, b);
if (m_imanager.is_zero(b)) {
return b;
}
m_imanager.mul(a, b, c);
m_imanager.set(a, c);
}
return a;
lp::lar_solver& intervals::ls() { return m_core->m_lar_solver; }
const lp::lar_solver& intervals::ls() const { return m_core->m_lar_solver; }
std::ostream& intervals::print_explanations(const svector<lp::constraint_index> &expl , std::ostream& out) const {
out << "interv expl:\n ";
for (auto ci : expl)
m_core->m_lar_solver.print_constraint_indices_only(ci, out);
return out;
}
intervals::interval intervals::mul_signs(const svector<lpvar>& vars) const {
interval a;
m_imanager.set(a, mpq(1));
for (lpvar j : vars) {
interval b, c;
set_var_interval_signs(j, b);
if (m_imanager.is_zero(b)) {
return b;
}
m_imanager.mul(a, b, c);
m_imanager.set(a, c);
}
return a;
}
bool intervals::product_has_upper_bound(int sign, const svector<lpvar>& vars) const {
interval a = mul_signs(vars);
SASSERT(sign == 1 || sign == -1);
return sign == 1 ? !m_imanager.upper_is_inf(a) : !m_imanager.lower_is_inf(a);
}
*/
}
} // end of nla namespace
// instantiate the template
template class interval_manager<nla::intervals::im_config>;