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;
 
    Matrix& operator+=(const Matrix& mat);
 
    Matrix& operator-=(const Matrix& mat);
 
    friend Matrix operator*(const Matrix& lhs, const Matrix& rhs);
 
    Matrix& operator*=(double s);
 
    Matrix& operator/=(double s);
 
    Matrix transpose() const;
 
protected:
 
    size_t rows_; 
    size_t cols_; 
    std::vector<double> data_; 
 
};
 
Matrix operator+(const Matrix& lhs, const Matrix& rhs);
 
Matrix operator-(const Matrix& lhs, const Matrix& rhs);
 
Matrix operator*(double s, const Matrix& mat);
 
Matrix operator*(const Matrix& mat, double s);
 
Matrix operator/(const Matrix& mat, double s);
 
std::ostream& operator<<(std::ostream& outputStream, const Matrix& mat);
 
std::istream& operator>>(std::istream& inputStream, Matrix& mat);
 
#endif // MATRIX_H_INCLUDED