clibgen can not generate operator() in the C++ matrix class.

I tried to create a matrix class by C++ which can use some operatr such as * or + to work on matrix or vector.

The header file is listed as,

#pragma once

#include <vector>

#include<iostream>

#define ill_condition pow(10,-14)

class QSMatrix

{

public:

QSMatrix();

QSMatrix(const QSMatrix & rhs);

QSMatrix(unsigned rows_, unsigned cols_);

QSMatrix(unsigned rows_, unsigned cols_, const double & initial_);

~QSMatrix();

void setElement(const unsigned& row, const unsigned& col, double value);

QSMatrix& operator=(const QSMatrix & rhs);

// Matrix mathematical operations

QSMatrix operator+(const QSMatrix & rhs);

QSMatrix & operator+=(const QSMatrix & rhs);

QSMatrix operator-(const QSMatrix & rhs);

QSMatrix & operator-=(const QSMatrix & rhs);

QSMatrix operator*(const QSMatrix & rhs);

QSMatrix & operator*=(const QSMatrix & rhs);

QSMatrix transpose();

// Matrix/scalar operations

QSMatrix operator+(const double& rhs);

QSMatrix operator-(const double& rhs);

QSMatrix operator*(const double& rhs);

QSMatrix operator/(const double& rhs);

double det();

QSMatrix cofactor();

QSMatrix inverse();

// int LUPDecompose(QSMatrix &tempMat, std::vector<double> &p);

// QSMatrix LUPInvert();

// double LUPDeterminant();

// Matrix/vector operations

std::vector<double> operator*(const std::vector<double> & rhs);

std::vector<double> diag_vec();

// Access the individual elements

double & operator()(const unsigned& row, const unsigned& col);

const double & operator()(const unsigned& row, const unsigned& col) const;

// Access the row and column sizes

unsigned get_rows() const;

unsigned get_cols() const;

private:

std::vector<std::vector<double>> val;

unsigned rows;

unsigned cols;

};

After I used the cligen package to generate the MATLAB interface, all methods are generated except ones with operator().

I wonder is that possible to create the operator () interface in MATLAB.

Thank you!

Answer 1

[Madheswaran]

Hi @Son Tung Dang

As of R2024b, MATLAB Interface for C++ doesn't support overloaded operators. You can see the list of limitations to C/C++ Support for MATLAB here: https://www.mathworks.com/help/matlab/matlab_external/limitations-to-cpp-support-in-matlab-cpp-library-interface.html

Hope this helps!