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testing simplex

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-02-02 13:48:02 +01:00
parent 363af825c0
commit 9ba4b532f6
5 changed files with 199 additions and 51 deletions
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8
src/math/simplex/simplex.h
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@ -111,7 +111,7 @@ namespace simplex {
typedef typename matrix::col_iterator col_iterator;
void ensure_var(var_t v);
row add_row(unsigned num_vars, var_t base, var_t const* vars, numeral const* coeffs);
row add_row(var_t base, unsigned num_vars, var_t const* vars, numeral const* coeffs);
void del_row(row const& r);
void set_lower(var_t var, eps_numeral const& b);
void set_upper(var_t var, eps_numeral const& b);
@ -125,6 +125,9 @@ namespace simplex {
eps_numeral const& get_value(var_t v);
void display(std::ostream& out) const;
unsigned get_num_vars() const { return m_vars.size(); }
private:
var_t select_var_to_fix();
@ -159,10 +162,11 @@ namespace simplex {
bool outside_bounds(var_t v) const { return below_lower(v) || above_upper(v); }
bool is_free(var_t v) const { return !m_vars[v].m_lower_valid && !m_vars[v].m_upper_valid; }
bool is_non_free(var_t v) const { return !is_free(v); }
unsigned get_num_vars() const { return m_vars.size(); }
bool is_base(var_t x) const { return m_vars[x].m_is_base; }
void add_patch(var_t v);
bool well_formed() const;
bool well_formed_row(row const& r) const;
bool is_feasible() const;
};