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matrix.h 2.34 KiB
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#pragma once
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#include <iostream>
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#include <initializer_list>
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namespace linalg {
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	class Matrix {
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		double* m_ptr;
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		int m_rows, m_columns;
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	protected:
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		class ProxyConst;
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		class Proxy;
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	public:
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		class ProxyConst
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		{
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			const Matrix& M;
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			int i;
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		public:
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			inline ProxyConst(const Matrix& M, int i);
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			inline double operator [] (int j) const;
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		};
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		class Proxy
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		{
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			Matrix& M;
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			int i;
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		public:
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			inline Proxy(Matrix& M, int i);
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			inline double& operator [] (int j);
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		};
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		inline Matrix(int rows, int columns);
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		inline Matrix(std::initializer_list<double> il);
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		inline Matrix(std::initializer_list <std::initializer_list<double>> il);
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		inline Matrix(const Matrix& orig);
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		inline Matrix(Matrix&& orig) noexcept;
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		inline ~Matrix();
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		inline double* ptr() const;
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		inline int rows() const;
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		inline int	columns() const;
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		inline bool empty() const;
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		inline void operator = (Matrix orig) ;
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		inline Matrix operator - (Matrix& orig) const;
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		inline Matrix operator += (Matrix& orig);
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		inline Matrix operator -= (Matrix& orig);
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		inline double& operator()(int i, int j);
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		inline double operator()(int i, int j) const;
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		ProxyConst operator[](int i) const {
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			return ProxyConst (*this, i);
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		}
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		Proxy operator[](int i) {
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			return Proxy(*this, i);
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		}
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		inline Matrix operator * (double n) const noexcept ;
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		inline Matrix operator *= (double n) noexcept;
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		inline Matrix operator *= (Matrix& other);
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		inline Matrix operator + (Matrix& other) const;
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		inline Matrix operator * (Matrix& other) const;
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		inline bool operator == (Matrix& other) ;
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		inline bool operator != (Matrix& other);
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		inline Matrix& reshape(int rows, int cols);
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		inline friend std::ostream& operator << (std::ostream& out, Matrix& M);
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		inline double norm();
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inline double trace(); inline Matrix gauss_forward(); inline Matrix gauss_backward(); inline int rank(); inline double det(); inline friend double calculateDeterminant(double* matrix, int size); inline friend Matrix concatenate(Matrix& matr1, Matrix& matr2); inline friend Matrix algebraAddition(int i, int j, Matrix& matr); inline friend Matrix transpose(Matrix& matr1); inline friend Matrix invert(Matrix& matr); inline friend Matrix power(Matrix& matr, int power); inline friend Matrix solve(Matrix& matr_a, Matrix& matr_f); inline friend Matrix operator * (double a, Matrix& matr) noexcept; }; }