mirror of
https://github.com/Z3Prover/z3
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53 lines
945 B
C++
53 lines
945 B
C++
/*++
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Copyright (c) 2017 Microsoft Corporation
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Module Name:
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<name>
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Abstract:
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<abstract>
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Author:
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Lev Nachmanson (levnach)
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Revision History:
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--*/
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#pragma once
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#include "util/vector.h"
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#include <utility>
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#include "util/debug.h"
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#include "util/lp/lp_utils.h"
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#include "util/lp/lp_settings.h"
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namespace lp {
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template <typename T>
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class sparse_vector {
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public:
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vector<std::pair<unsigned, T>> m_data;
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void push_back(unsigned index, T val) {
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m_data.push_back(std::make_pair(index, val));
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}
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#ifdef Z3DEBUG
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T operator[] (unsigned i) const {
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for (auto &t : m_data) {
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if (t.first == i) return t.second;
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}
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return numeric_traits<T>::zero();
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}
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#endif
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void divide(T const & a) {
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SASSERT(!lp_settings::is_eps_small_general(a, 1e-12));
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for (auto & t : m_data) { t.second /= a; }
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}
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unsigned size() const {
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return m_data.size();
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}
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};
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}
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