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mv util/lp to math/lp

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-06-03 16:46:19 -07:00
parent b6513b8e2d
commit 33cbd29ed0
150 changed files with 524 additions and 479 deletions
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49
src/util/lp/explanation.h
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@ -1,49 +0,0 @@
/*++
Copyright (c) 2017 Microsoft Corporation
Module Name:
<name>
Abstract:
<abstract>
Author:
Nikolaj Bjorner (nbjorner)
Lev Nachmanson (levnach)
Revision History:
--*/
#pragma once
#include <unordered_set>
#include "util/lp/lp_utils.h"
namespace lp {
class explanation {
vector<std::pair<mpq, constraint_index>> m_explanation;
std::unordered_set<unsigned> m_set_of_ci;
public:
void clear() { m_explanation.clear(); m_set_of_ci.clear(); }
vector<std::pair<mpq, constraint_index>>::const_iterator begin() const { return m_explanation.begin(); }
vector<std::pair<mpq, constraint_index>>::const_iterator end() const { return m_explanation.end(); }
void push_justification(constraint_index j, const mpq& v) {
m_explanation.push_back(std::make_pair(v, j));
}
void push_justification(constraint_index j) {
if (m_set_of_ci.find(j) != m_set_of_ci.end()) return;
m_set_of_ci.insert(j);
m_explanation.push_back(std::make_pair(one_of_type<mpq>(), j));
}
void add(const explanation& e) { for (auto j: e.m_set_of_ci) add(j); }
void add(unsigned ci) { push_justification(ci); }
void add(const std::pair<mpq, constraint_index>& j) { push_justification(j.second, j.first); }
bool empty() const { return m_explanation.empty(); }
size_t size() const { return m_explanation.size(); }
};
}