/* basic matrix library for  comp381                            */  

int get_slot(int fd, int matrix_size, int row, int col, int *slot);
int set_slot(int fd, int matrix_size, int row, int col, int value);


int get_row(int fd, int matrix_size, int row, int matrix_row[]);
int set_row(int fd, int matrix_size, int row, int matrix_row[]);

int get_column(int fd, int matrix_size, int col, int matrix_col[]);