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work on Gomory cut

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Signed-off-by: Lev <levnach@hotmail.com>
This commit is contained in:
Lev 2018-09-18 13:34:05 -07:00
parent 5bbe0508e4
commit ca3ce964ce
6 changed files with 160 additions and 47 deletions
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8
src/util/lp/int_solver.h
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@ -113,17 +113,9 @@ private:
bool has_low(unsigned j) const;
bool has_upper(unsigned j) const;
unsigned row_of_basic_column(unsigned j) const;
inline static bool is_rational(const impq & n) {
return is_zero(n.y);
}
public:
void display_column(std::ostream & out, unsigned j) const;
inline static
mpq fractional_part(const impq & n) {
lp_assert(is_rational(n));
return n.x - floor(n.x);
}
constraint_index column_upper_bound_constraint(unsigned j) const;
constraint_index column_lower_bound_constraint(unsigned j) const;
bool current_solution_is_inf_on_cut() const;