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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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42
src/util/lp/iterator_on_pivot_row.h Normal file
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/*
Copyright (c) 2017 Microsoft Corporation
Author: Lev Nachmanson
*/
#pragma once
#include "util/lp/iterator_on_indexed_vector.h"
namespace lean {
template <typename T>
struct iterator_on_pivot_row:linear_combination_iterator<T> {
bool m_basis_returned = false;
const indexed_vector<T> & m_v;
unsigned m_basis_j;
iterator_on_indexed_vector<T> m_it;
unsigned size() const { return m_it.size(); }
iterator_on_pivot_row(const indexed_vector<T> & v, unsigned basis_j) : m_v(v), m_basis_j(basis_j), m_it(v) {}
bool next(T & a, unsigned & i) {
if (m_basis_returned == false) {
m_basis_returned = true;
a = one_of_type<T>();
i = m_basis_j;
return true;
}
return m_it.next(a, i);
}
bool next(unsigned & i) {
if (m_basis_returned == false) {
m_basis_returned = true;
i = m_basis_j;
return true;
}
return m_it.next(i);
}
void reset() {
m_basis_returned = false;
m_it.reset();
}
linear_combination_iterator<T> * clone() {
iterator_on_pivot_row * r = new iterator_on_pivot_row(m_v, m_basis_j);
return r;
}
};
}