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in grobner optional treatment of fixed vars in rows, remove a field

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-12-05 16:19:17 -10:00
parent 0b1023c2c7
commit e62913999e
3 changed files with 13 additions and 17 deletions
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8
src/math/lp/nla_common.cpp
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@ -129,8 +129,10 @@ nex * common::nexvar(const rational & coeff, lpvar j, nex_creator& cn, bool fixe
if (!c().is_monic_var(j)) {
if (fixed_as_scalars && c().var_is_fixed(j)) {
auto & b = c().m_lar_solver.get_lower_bound(j).x;
if (b.is_zero())
if (b.is_zero()) {
TRACE("nla_grobner", tout << "[" << j << "] is fixed to zero\n";);
return nullptr;
}
return cn.mk_scalar(coeff * b);
}
c().insert_to_active_var_set(j);
@ -150,9 +152,9 @@ nex * common::nexvar(const rational & coeff, lpvar j, nex_creator& cn, bool fixe
}
c().insert_to_active_var_set(k);
e->add_child(cn.mk_var(k));
CTRACE("nla_horner", c().is_monic_var(k), c().print_var(k, tout) << "\n";);
CTRACE("nla_grobner", c().is_monic_var(k), c().print_var(k, tout) << "\n";);
}
TRACE("nla_cn", tout << *e;);
TRACE("nla_grobner", tout << *e;);
return e;
}