mirror of
https://github.com/c64scene-ar/llvm-6502.git
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98b5aaeebb
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202735 91177308-0d34-0410-b5e6-96231b3b80d8
439 lines
13 KiB
C++
439 lines
13 KiB
C++
//===------ Math.h - PBQP Vector and Matrix classes -------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_PBQP_MATH_H
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#define LLVM_CODEGEN_PBQP_MATH_H
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#include <algorithm>
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#include <cassert>
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#include <functional>
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namespace PBQP {
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typedef float PBQPNum;
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/// \brief PBQP Vector class.
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class Vector {
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friend class VectorComparator;
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public:
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/// \brief Construct a PBQP vector of the given size.
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explicit Vector(unsigned Length)
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: Length(Length), Data(new PBQPNum[Length]) {
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// llvm::dbgs() << "Constructing PBQP::Vector "
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// << this << " (length " << Length << ")\n";
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}
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/// \brief Construct a PBQP vector with initializer.
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Vector(unsigned Length, PBQPNum InitVal)
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: Length(Length), Data(new PBQPNum[Length]) {
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// llvm::dbgs() << "Constructing PBQP::Vector "
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// << this << " (length " << Length << ", fill "
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// << InitVal << ")\n";
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std::fill(Data, Data + Length, InitVal);
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}
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/// \brief Copy construct a PBQP vector.
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Vector(const Vector &V)
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: Length(V.Length), Data(new PBQPNum[Length]) {
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// llvm::dbgs() << "Copy-constructing PBQP::Vector " << this
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// << " from PBQP::Vector " << &V << "\n";
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std::copy(V.Data, V.Data + Length, Data);
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}
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/// \brief Move construct a PBQP vector.
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Vector(Vector &&V)
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: Length(V.Length), Data(V.Data) {
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V.Length = 0;
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V.Data = nullptr;
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}
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/// \brief Destroy this vector, return its memory.
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~Vector() {
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// llvm::dbgs() << "Deleting PBQP::Vector " << this << "\n";
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delete[] Data;
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}
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/// \brief Copy-assignment operator.
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Vector& operator=(const Vector &V) {
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// llvm::dbgs() << "Assigning to PBQP::Vector " << this
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// << " from PBQP::Vector " << &V << "\n";
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delete[] Data;
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Length = V.Length;
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Data = new PBQPNum[Length];
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std::copy(V.Data, V.Data + Length, Data);
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return *this;
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}
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/// \brief Move-assignment operator.
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Vector& operator=(Vector &&V) {
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delete[] Data;
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Length = V.Length;
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Data = V.Data;
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V.Length = 0;
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V.Data = nullptr;
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return *this;
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}
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/// \brief Comparison operator.
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bool operator==(const Vector &V) const {
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assert(Length != 0 && Data != nullptr && "Invalid vector");
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if (Length != V.Length)
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return false;
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return std::equal(Data, Data + Length, V.Data);
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}
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/// \brief Return the length of the vector
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unsigned getLength() const {
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assert(Length != 0 && Data != nullptr && "Invalid vector");
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return Length;
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}
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/// \brief Element access.
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PBQPNum& operator[](unsigned Index) {
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assert(Length != 0 && Data != nullptr && "Invalid vector");
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assert(Index < Length && "Vector element access out of bounds.");
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return Data[Index];
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}
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/// \brief Const element access.
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const PBQPNum& operator[](unsigned Index) const {
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assert(Length != 0 && Data != nullptr && "Invalid vector");
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assert(Index < Length && "Vector element access out of bounds.");
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return Data[Index];
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}
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/// \brief Add another vector to this one.
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Vector& operator+=(const Vector &V) {
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assert(Length != 0 && Data != nullptr && "Invalid vector");
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assert(Length == V.Length && "Vector length mismatch.");
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std::transform(Data, Data + Length, V.Data, Data, std::plus<PBQPNum>());
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return *this;
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}
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/// \brief Subtract another vector from this one.
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Vector& operator-=(const Vector &V) {
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assert(Length != 0 && Data != nullptr && "Invalid vector");
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assert(Length == V.Length && "Vector length mismatch.");
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std::transform(Data, Data + Length, V.Data, Data, std::minus<PBQPNum>());
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return *this;
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}
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/// \brief Returns the index of the minimum value in this vector
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unsigned minIndex() const {
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assert(Length != 0 && Data != nullptr && "Invalid vector");
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return std::min_element(Data, Data + Length) - Data;
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}
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private:
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unsigned Length;
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PBQPNum *Data;
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};
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class VectorComparator {
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public:
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bool operator()(const Vector &A, const Vector &B) {
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if (A.Length < B.Length)
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return true;
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if (B.Length < A.Length)
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return false;
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char *AData = reinterpret_cast<char*>(A.Data);
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char *BData = reinterpret_cast<char*>(B.Data);
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return std::lexicographical_compare(AData,
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AData + A.Length * sizeof(PBQPNum),
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BData,
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BData + A.Length * sizeof(PBQPNum));
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}
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};
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/// \brief Output a textual representation of the given vector on the given
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/// output stream.
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template <typename OStream>
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OStream& operator<<(OStream &OS, const Vector &V) {
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assert((V.getLength() != 0) && "Zero-length vector badness.");
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OS << "[ " << V[0];
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for (unsigned i = 1; i < V.getLength(); ++i)
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OS << ", " << V[i];
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OS << " ]";
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return OS;
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}
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/// \brief PBQP Matrix class
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class Matrix {
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private:
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friend class MatrixComparator;
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public:
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/// \brief Construct a PBQP Matrix with the given dimensions.
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Matrix(unsigned Rows, unsigned Cols) :
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Rows(Rows), Cols(Cols), Data(new PBQPNum[Rows * Cols]) {
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}
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/// \brief Construct a PBQP Matrix with the given dimensions and initial
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/// value.
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Matrix(unsigned Rows, unsigned Cols, PBQPNum InitVal)
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: Rows(Rows), Cols(Cols), Data(new PBQPNum[Rows * Cols]) {
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std::fill(Data, Data + (Rows * Cols), InitVal);
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}
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/// \brief Copy construct a PBQP matrix.
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Matrix(const Matrix &M)
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: Rows(M.Rows), Cols(M.Cols), Data(new PBQPNum[Rows * Cols]) {
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std::copy(M.Data, M.Data + (Rows * Cols), Data);
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}
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/// \brief Move construct a PBQP matrix.
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Matrix(Matrix &&M)
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: Rows(M.Rows), Cols(M.Cols), Data(M.Data) {
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M.Rows = M.Cols = 0;
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M.Data = nullptr;
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}
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/// \brief Destroy this matrix, return its memory.
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~Matrix() { delete[] Data; }
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/// \brief Copy-assignment operator.
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Matrix& operator=(const Matrix &M) {
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delete[] Data;
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Rows = M.Rows; Cols = M.Cols;
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Data = new PBQPNum[Rows * Cols];
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std::copy(M.Data, M.Data + (Rows * Cols), Data);
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return *this;
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}
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/// \brief Move-assignment operator.
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Matrix& operator=(Matrix &&M) {
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delete[] Data;
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Rows = M.Rows;
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Cols = M.Cols;
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Data = M.Data;
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M.Rows = M.Cols = 0;
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M.Data = nullptr;
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return *this;
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}
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/// \brief Comparison operator.
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bool operator==(const Matrix &M) const {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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if (Rows != M.Rows || Cols != M.Cols)
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return false;
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return std::equal(Data, Data + (Rows * Cols), M.Data);
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}
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/// \brief Return the number of rows in this matrix.
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unsigned getRows() const {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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return Rows;
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}
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/// \brief Return the number of cols in this matrix.
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unsigned getCols() const {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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return Cols;
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}
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/// \brief Matrix element access.
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PBQPNum* operator[](unsigned R) {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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assert(R < Rows && "Row out of bounds.");
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return Data + (R * Cols);
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}
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/// \brief Matrix element access.
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const PBQPNum* operator[](unsigned R) const {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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assert(R < Rows && "Row out of bounds.");
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return Data + (R * Cols);
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}
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/// \brief Returns the given row as a vector.
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Vector getRowAsVector(unsigned R) const {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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Vector V(Cols);
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for (unsigned C = 0; C < Cols; ++C)
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V[C] = (*this)[R][C];
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return V;
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}
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/// \brief Returns the given column as a vector.
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Vector getColAsVector(unsigned C) const {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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Vector V(Rows);
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for (unsigned R = 0; R < Rows; ++R)
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V[R] = (*this)[R][C];
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return V;
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}
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/// \brief Reset the matrix to the given value.
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Matrix& reset(PBQPNum Val = 0) {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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std::fill(Data, Data + (Rows * Cols), Val);
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return *this;
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}
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/// \brief Set a single row of this matrix to the given value.
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Matrix& setRow(unsigned R, PBQPNum Val) {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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assert(R < Rows && "Row out of bounds.");
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std::fill(Data + (R * Cols), Data + ((R + 1) * Cols), Val);
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return *this;
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}
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/// \brief Set a single column of this matrix to the given value.
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Matrix& setCol(unsigned C, PBQPNum Val) {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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assert(C < Cols && "Column out of bounds.");
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for (unsigned R = 0; R < Rows; ++R)
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(*this)[R][C] = Val;
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return *this;
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}
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/// \brief Matrix transpose.
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Matrix transpose() const {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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Matrix M(Cols, Rows);
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for (unsigned r = 0; r < Rows; ++r)
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for (unsigned c = 0; c < Cols; ++c)
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M[c][r] = (*this)[r][c];
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return M;
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}
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/// \brief Returns the diagonal of the matrix as a vector.
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///
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/// Matrix must be square.
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Vector diagonalize() const {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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assert(Rows == Cols && "Attempt to diagonalize non-square matrix.");
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Vector V(Rows);
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for (unsigned r = 0; r < Rows; ++r)
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V[r] = (*this)[r][r];
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return V;
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}
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/// \brief Add the given matrix to this one.
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Matrix& operator+=(const Matrix &M) {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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assert(Rows == M.Rows && Cols == M.Cols &&
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"Matrix dimensions mismatch.");
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std::transform(Data, Data + (Rows * Cols), M.Data, Data,
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std::plus<PBQPNum>());
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return *this;
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}
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Matrix operator+(const Matrix &M) {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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Matrix Tmp(*this);
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Tmp += M;
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return Tmp;
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}
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/// \brief Returns the minimum of the given row
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PBQPNum getRowMin(unsigned R) const {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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assert(R < Rows && "Row out of bounds");
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return *std::min_element(Data + (R * Cols), Data + ((R + 1) * Cols));
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}
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/// \brief Returns the minimum of the given column
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PBQPNum getColMin(unsigned C) const {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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PBQPNum MinElem = (*this)[0][C];
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for (unsigned R = 1; R < Rows; ++R)
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if ((*this)[R][C] < MinElem)
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MinElem = (*this)[R][C];
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return MinElem;
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}
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/// \brief Subtracts the given scalar from the elements of the given row.
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Matrix& subFromRow(unsigned R, PBQPNum Val) {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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assert(R < Rows && "Row out of bounds");
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std::transform(Data + (R * Cols), Data + ((R + 1) * Cols),
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Data + (R * Cols),
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std::bind2nd(std::minus<PBQPNum>(), Val));
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return *this;
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}
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/// \brief Subtracts the given scalar from the elements of the given column.
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Matrix& subFromCol(unsigned C, PBQPNum Val) {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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for (unsigned R = 0; R < Rows; ++R)
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(*this)[R][C] -= Val;
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return *this;
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}
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/// \brief Returns true if this is a zero matrix.
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bool isZero() const {
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assert(Rows != 0 && Cols != 0 && Data != nullptr && "Invalid matrix");
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return find_if(Data, Data + (Rows * Cols),
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std::bind2nd(std::not_equal_to<PBQPNum>(), 0)) ==
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Data + (Rows * Cols);
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}
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private:
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unsigned Rows, Cols;
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PBQPNum *Data;
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};
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class MatrixComparator {
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public:
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bool operator()(const Matrix &A, const Matrix &B) {
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if (A.Rows < B.Rows)
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return true;
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if (B.Rows < A.Rows)
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return false;
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if (A.Cols < B.Cols)
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return true;
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if (B.Cols < A.Cols)
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return false;
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char *AData = reinterpret_cast<char*>(A.Data);
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char *BData = reinterpret_cast<char*>(B.Data);
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return std::lexicographical_compare(
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AData, AData + (A.Rows * A.Cols * sizeof(PBQPNum)),
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BData, BData + (A.Rows * A.Cols * sizeof(PBQPNum)));
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}
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};
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/// \brief Output a textual representation of the given matrix on the given
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/// output stream.
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template <typename OStream>
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OStream& operator<<(OStream &OS, const Matrix &M) {
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assert((M.getRows() != 0) && "Zero-row matrix badness.");
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for (unsigned i = 0; i < M.getRows(); ++i)
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OS << M.getRowAsVector(i);
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return OS;
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}
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template <typename Metadata>
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class MDVector : public Vector {
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public:
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MDVector(const Vector &v) : Vector(v), md(*this) { }
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MDVector(Vector &&v) : Vector(std::move(v)), md(*this) { }
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const Metadata& getMetadata() const { return md; }
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private:
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Metadata md;
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};
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template <typename Metadata>
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class MDMatrix : public Matrix {
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public:
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MDMatrix(const Matrix &m) : Matrix(m), md(*this) { }
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MDMatrix(Matrix &&m) : Matrix(std::move(m)), md(*this) { }
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const Metadata& getMetadata() const { return md; }
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private:
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Metadata md;
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};
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}
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#endif // LLVM_CODEGEN_PBQP_MATH_H
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