Matrix Library C++

Описание на русском тут

In this project, I am implementing the s21_matrix_oop.h library for working with matrices in the likeness of matrix_library_c, but this time using an object-oriented approach (see materials). The object-oriented approach allows you to implement a library for working with matrices in the form of a separate class, on the objects of which operations are defined, represented by both methods and standard operators +, -, *, etc.

Compilation and testing

s21_matrix_oop.a - build a clean library.

Testing

test - run function tests.

leaks - check the tested code for leaks.

gcov_report - view the code test coverage.

Operations

Below is a brief description of the operations on matrices that are implemented by the library.

Constructors and destructors

Method	Description
S21Matrix()	A basic constructor initializing a matrix with some predefined dimension.
S21Matrix(int rows, int cols)	Parameterized constructor with the number of rows and columns.
S21Matrix(const S21Matrix& other)	The copy constructor.
S21Matrix(S21Matrix&& other)	The transfer constructor.
~S21Matrix()	The destructor.

Operations (methods)

Operation	Description	Exceptional situations
bool EqMatrix(const S21Matrix& other)	Checks the matrices for equality among themselves.
void SumMatrix(const S21Matrix& other)	Adds a second matrix to the current one	different matrix dimensions.
void SubMatrix(const S21Matrix& other)	Subtracts from the current matrix another	different dimension of the matrices.
void MulNumber(const double num)	Multiplies the current matrix by a number.
void MulMatrix(const S21Matrix& other)	Multiplies the current matrix by the second one.	the number of columns of the first matrix is not equal to the number of rows of the second matrix.
S21Matrix Transpose()	Creates a new transposed matrix from the current one and returns it.
S21Matrix CalcComplements()	Calculates the matrix of algebraic complements of the current matrix and returns it.	The matrix is not square.
double Determinant()	Calculates and returns the determinant of the current matrix.	The matrix is not square.
S21Matrix InverseMatrix()	Calculates and returns the inverse matrix.	The determinant of the matrix is 0.

Operator overloads

Operator	Description	Exceptional situations
+	Addition of two matrices.	Different matrix dimensions.
-	Subtraction of one matrix from another.	Different matrix dimensions.
*	Matrix multiplication and matrix multiplication by a number.	The number of columns of the first matrix does not equal the number of rows of the second matrix.
==	Checks for matrices equality (EqMatrix).
=	Assignment of values from one matrix to another one.
+=	Addition assignment (SumMatrix)	different matrix dimensions.
-=	Difference assignment (SubMatrix)	different matrix dimensions.
*=	Multiplication assignment (MulMatrix/MulNumber).	The number of columns of the first matrix does not equal the number of rows of the second matrix.
(int i, int j)	Indexation by matrix elements (row, column).	Index is outside the matrix.