| Operation | Description | Exceptional situations |
|---|---|---|
bool EqMatrix(const S21Matrix& other) |
Checks matrices for equality with each other | |
void SumMatrix(const S21Matrix& other) |
Adds the second matrix to the current one | different matrix dimensions |
void SubMatrix(const S21Matrix& other) |
Subtracts another matrix from the current one | different matrix dimensions |
void MulNumber(const double num) |
Multiplies the current matrix by a number | |
void MulMatrix(const S21Matrix& other) |
Multiplies the current matrix by the second matrix | 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 algebraic addition matrix of the current one 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 | matrix determinant is 0 |
| Method | Description |
|---|---|
S21Matrix() |
A basic constructor that initialises a matrix of some predefined dimension |
S21Matrix(int rows, int cols) |
Parametrized constructor with number of rows and columns |
S21Matrix(const S21Matrix& other) |
Copy constructor |
S21Matrix(S21Matrix&& other) |
Move constructor |
~S21Matrix() |
Destructor |
| 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 |