s21_matrix

Implementation of the matrix.h library. Study project.

• The library is developed in C language of C11 standard using gcc compiler
• The library code is located in the src folder on the develop branch
• The code of the program is written in accordance with Google style
• Static library (with the s21_matrix.h header file)
• The library is developed according to the principles of structured programming
• Full coverage of library functions code provided with unit-tests using <check.h> library
• Makefile with targets all, clean, test, s21_matrix.a, gcov_report is provided
• Verifiable accuracy of the fractional part is up to 7 decimal points

Matrix structure:

typedef struct {
    double** matrix;
    int rows;
    int columns;
} matrix_t;

Matrix operations

All operations (except matrix comparison) return the resulting code:

• 0 - OK
• 1 - Error, incorrect matrix
• 2 - Calculation error (mismatched matrix sizes; matrix for which calculations cannot be performed, etc.)

Function	Description
int s21_create_matrix(int rows, int columns, matrix_t *result)	Creating matrices
void s21_remove_matrix(matrix_t *A)	Cleaning matrices
int s21_eq_matrix(matrix_t *A, matrix_t *B)	Matrix comparison
int s21_sum_matrix(matrix_t *A, matrix_t *B, matrix_t *result)	Adding matrices
int s21_sub_matrix(matrix_t *A, matrix_t *B, matrix_t *result)	Subtracting matrices
int s21_mult_number(matrix_t *A, double number, matrix_t *result)	Matrix multiplication by scalar
int s21_mult_matrix(matrix_t *A, matrix_t *B, matrix_t *result)	Multiplication of two matrices
int s21_transpose(matrix_t *A, matrix_t *result)	Matrix transpose
int s21_calc_complements(matrix_t *A, matrix_t *result)	Matrix of algebraic complements
int s21_determinant(matrix_t *A, double *result)	Matrix determinant
int s21_inverse_matrix(matrix_t *A, matrix_t *result)	Inverse of the matrix