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42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
/*
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Copyright (c) 2017 Microsoft Corporation
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Author: Lev Nachmanson
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*/
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#pragma once
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#include "util/lp/lp_settings.h"
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#include "util/lp/lar_constraints.h"
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namespace lp {
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struct implied_bound {
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mpq m_bound;
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unsigned m_j; // the column for which the bound has been found
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bool m_is_low_bound;
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bool m_coeff_before_j_is_pos;
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unsigned m_row_or_term_index;
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bool m_strict;
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lconstraint_kind kind() const {
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lconstraint_kind k = m_is_low_bound? GE : LE;
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if (m_strict)
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k = static_cast<lconstraint_kind>(k / 2);
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return k;
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}
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bool operator==(const implied_bound & o) const {
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return m_j == o.m_j && m_is_low_bound == o.m_is_low_bound && m_bound == o.m_bound &&
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m_coeff_before_j_is_pos == o.m_coeff_before_j_is_pos &&
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m_row_or_term_index == o.m_row_or_term_index && m_strict == o.m_strict;
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}
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implied_bound(){}
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implied_bound(const mpq & a,
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unsigned j,
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bool low_bound,
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bool coeff_before_j_is_pos,
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unsigned row_or_term_index,
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bool strict):
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m_bound(a),
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m_j(j),
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m_is_low_bound(low_bound),
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m_coeff_before_j_is_pos(coeff_before_j_is_pos),
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m_row_or_term_index(row_or_term_index),
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m_strict(strict) {}
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};
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}
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