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fix remove lar_solver::add_constraint

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-08-01 17:28:49 -07:00
parent 7cd90537c3
commit 3c5b1086a1
8 changed files with 164 additions and 122 deletions
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41
src/math/lp/nla_expr.h
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@ -376,6 +376,47 @@ public:
return *this;
}
bool sum_is_linear() const {
SASSERT(is_sum());
int degree = 0;
for (auto & e : children()) {
int d = e.get_degree();
if (d > 1)
return false;
if (d > degree)
degree = d;
}
return degree == 1;
}
int get_degree() const {
switch (type()) {
case expr_type::SUM: {
int degree = 0;
for (auto & e : children()) {
degree = std::max(degree, e.get_degree());
}
return degree;
}
case expr_type::MUL: {
int degree = 0;
for (auto & e : children()) {
degree += e.get_degree();
}
return degree;
}
case expr_type::VAR:
return 1;
case expr_type::SCALAR:
return 0;
case expr_type::UNDEF:
default:
UNREACHABLE();
break;
}
return 0;
}
};
/*