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merge LRA

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-05-09 10:46:11 -07:00
parent 085d31dca2
commit 911b24784a
120 changed files with 23069 additions and 15 deletions
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src/util/lp/ul_pair.h Normal file
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/*
Copyright (c) 2017 Microsoft Corporation
Author: Lev Nachmanson
*/
#pragma once
#include "util/vector.h"
#include <string>
#include <algorithm>
#include <utility>
#include "util/lp/column_info.h"
namespace lean {
enum lconstraint_kind {
LE = -2, LT = -1 , GE = 2, GT = 1, EQ = 0
};
inline std::ostream& operator<<(std::ostream& out, lconstraint_kind k) {
switch (k) {
case LE: return out << "<=";
case LT: return out << "<";
case GE: return out << ">=";
case GT: return out << ">";
case EQ: return out << "=";
}
return out << "??";
}
inline bool compare(const std::pair<mpq, var_index> & a, const std::pair<mpq, var_index> & b) {
return a.second < b.second;
}
class ul_pair {
constraint_index m_low_bound_witness = static_cast<constraint_index>(-1);
constraint_index m_upper_bound_witness = static_cast<constraint_index>(-1);
public:
constraint_index& low_bound_witness() {return m_low_bound_witness;}
constraint_index low_bound_witness() const {return m_low_bound_witness;}
constraint_index& upper_bound_witness() { return m_upper_bound_witness;}
constraint_index upper_bound_witness() const {return m_upper_bound_witness;}
row_index m_i = static_cast<row_index>(-1);
bool operator!=(const ul_pair & p) const {
return !(*this == p);
}
bool operator==(const ul_pair & p) const {
return m_low_bound_witness == p.m_low_bound_witness
&& m_upper_bound_witness == p.m_upper_bound_witness &&
m_i == p.m_i;
}
// empty constructor
ul_pair(){}
ul_pair(row_index ri) : m_i(ri) {}
ul_pair(const ul_pair & o): m_low_bound_witness(o.m_low_bound_witness), m_upper_bound_witness(o.m_upper_bound_witness), m_i(o.m_i) {}
};
}