Matrix.h

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#pragma once

#ifndef MATRIX_H_INCLUDED
#define MATRIX_H_INCLUDED

#include <vector>
#include <iostream>

class Matrix {

public:

           Matrix(size_t size=1);

           Matrix(size_t rows, size_t cols);

           Matrix(const Matrix& mat);

           virtual ~Matrix();

           Matrix& operator=(const Matrix& mat);

           // Handy factory methods

           static Matrix identity(size_t rows, size_t cols);

           static Matrix zero(size_t rows, size_t cols);

           double& operator()(size_t row, size_t col);

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

           size_t numRows() const;

           size_t numCols() const;

           size_t numElements() const;

           Matrix operator-() const;

           friend Matrix operator+(const Matrix& lhs, const Matrix& rhs);
                      
           Matrix& operator+=(const Matrix& mat);

           friend Matrix operator-(const Matrix& lhs, const Matrix& rhs);

           Matrix& operator-=(const Matrix& mat);

           friend Matrix operator*(const Matrix& lhs, const Matrix& rhs);

           friend Matrix operator*(double s, const Matrix& mat);
           
           friend Matrix operator*(const Matrix& mat, double s);


           Matrix& operator*=(double s);

           friend Matrix operator/(const Matrix& mat, double s);

           Matrix& operator/=(double s);

           Matrix transpose() const;

protected:

           size_t rows_; 
           size_t cols_; 
           std::vector<double> data_; 

};

std::ostream& operator<<(std::ostream& outputStream, const Matrix& mat);


std::istream& operator>>(std::istream& inputStream, Matrix& mat);

#endif // MATRIX_H_INCLUDED