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updates to sorting networks

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2017-09-23 22:36:19 -05:00
parent 3c4ac9aee5
commit edb3569599
18 changed files with 2070 additions and 170 deletions
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27
src/util/lp/bound_propagator.h Normal file
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/*
Copyright (c) 2017 Microsoft Corporation
Author: Lev Nachmanson
*/
#pragma once
#include "util/lp/lp_settings.h"
namespace lp {
class lar_solver;
class bound_propagator {
std::unordered_map<unsigned, unsigned> m_improved_low_bounds; // these maps map a column index to the corresponding index in ibounds
std::unordered_map<unsigned, unsigned> m_improved_upper_bounds;
lar_solver & m_lar_solver;
public:
vector<implied_bound> m_ibounds;
public:
bound_propagator(lar_solver & ls);
column_type get_column_type(unsigned) const;
const impq & get_low_bound(unsigned) const;
const impq & get_upper_bound(unsigned) const;
void try_add_bound(mpq v, unsigned j, bool is_low, bool coeff_before_j_is_pos, unsigned row_or_term_index, bool strict);
virtual bool bound_is_interesting(unsigned vi,
lp::lconstraint_kind kind,
const rational & bval) {return true;}
unsigned number_of_found_bounds() const { return m_ibounds.size(); }
virtual void consume(mpq const& v, unsigned j) { std::cout << "doh\n"; }
};
}