libft

The libft library is the first project from the 42 curriculum. While a 42 student rarely has access to external libraries, the use of our libft is always authorized and encouraged.

Useful links

• The libft PDF subject
• The get_next_line PDF subject
• The printf PDF subject
• The GNU C Library Sources
• The 42 File Checker
• The Libftest
• The ft_printf checker
• The IEEE 754 Standard for Floating-Point

Available Functions

Symbol	Meaning
⬜	Standard C Functions.
⬛	Non Standard C Functions.
⚪	Subject Functions.
⚫	Bonus Functions.

Print/Put Functions

• ⬛⚪ ft_putchar
• ⬛⚪ ft_putchar_fd
• ⬛⚪ ft_putendl
• ⬛⚪ ft_putendl_fd
• ⬛⚪ ft_putnbr
• ⬛⚪ ft_putnbr_fd
• ⬛⚪ ft_putstr
• ⬛⚪ ft_putstr_fd
• ⬜⚫ int ft_printf(const char *format, ...);
• ⬜⚫ int ft_dprintf(int fd, const char *format, ...);
• ⬜⚫ char *ft_sprintf(const char *format, ...);
• ⬛⚫ int ft_nprintf(const char *format, ...);

Raw Memory Functions

• ⬜⚪ ft_memset
• ⬜⚪ ft_memcpy
• ⬜⚪ ft_memccpy
• ⬜⚪ ft_memmove
• ⬜⚪ ft_memchr
• ⬜⚪ ft_memcmp
• ⬛⚪ ft_bzero
• ⬛⚪ ft_memdel
• ⬛⚪ ft_memalloc

Singly Linked List Functions

• ⬛⚪ t_list *ft_lstnew(void const *content, size_t content_size);
• ⬛⚪ void ft_lstdelone(t_list **alst, void (*del)(void *, size_t));
• ⬛⚪ void ft_lstdel(t_list **alst, void (*del)(void *, size_t));
• ⬛⚪ void ft_lstadd(t_list **alst, t_list *new);
• ⬛⚪ void ft_lstmap(t_list *lst, t_list *(*f)(t_list * elem));
• ⬛⚪ void ft_lstiter(t_list *lst, void (*f)(t_list *elem));
• ⬛⚫ void ft_lstinsert(t_list **alst, t_list *new);
• ⬛⚫ void ft_lstappend(t_list **alst, t_list *new);
• ⬛⚫ void ft_lstfree(void *content, size_t content_size);
• ⬛⚫ size_t ft_lstsize(t_list *lst);

Is 'A' Functions

• ⬜⚪ int ft_isalpha(int c);
• ⬜⚪ int ft_isdigit(int c);
• ⬜⚪ int ft_isalnum(int c);
• ⬜⚪ int ft_isascii(int c);
• ⬜⚪ int ft_isprint(int c);
• ⬛⚫ int ft_iswhitespace(char *s, int ignore_line_feed);

'A' To 'B' Functions

• ⬜⚪ int ft_atoi(const char *src);
• ⬜⚪ int ft_toupper(int c);
• ⬜⚪ int ft_tolower(int c);
• ⬛⚪ char *ft_itoa(int n);
• ⬛⚫ size_t ft_atozu(const char *src);

String Search Functions

• ⬜⚪ ft_strlen
• ⬜⚪ ft_strchr
• ⬜⚪ ft_strcmp
• ⬜⚪ ft_strncmp
• ⬜⚪ char *ft_strstr(const char *haystack, const char *needle);
• ⬜⚪ char *ft_strnstr(const char *haystack, const char *needle, size_t len);
• ⬛⚪ int ft_strequ(char const *s1, char const *s2);
• ⬛⚪ int ft_strnequ(char const *s1, char const *s2);
• ⬛⚫ char *ft_strastr(const char *s1, const char *s2);
• ⬛⚫ size_t ft_strastri(const char *s1, const char *s2);
• ⬛⚫ size_t ft_strchri(const char *s, int c);
• ⬛⚫ size_t ft_strnchri(const char *s, int c, size_t n);
• ⬛⚫ int ft_strlcmp(const char *s1, const char *s2);
• ⬛⚫ char *ft_strrstr(const char *haystack, const char *needle);
• ⬛⚫ char *ft_strrchr(const char *s, int c);

String Modification Functions

• ⬜⚪ char *ft_strcat(char *s1, const char *s2);
• ⬜⚪ char *ft_strncat(char *s1, const char *s2, size_t n);
• ⬜⚪ char *ft_strlcat(char *s1, const char *s2, size_t n);
• ⬜⚪ char *ft_strdup(const char *s1);
• ⬜⚪ char *ft_strcpy(char *dst, const char *src);
• ⬜⚪ char *ft_strncpy(char *dst, const char *src, size_t len);
• ⬛⚪ void ft_strclr(char *s);
• ⬛⚪ void ft_strdel(char **as);
• ⬛⚪ char *ft_strnew(size_t size);
• ⬛⚪ char *ft_strsub(char const *s, unsigned int start, size_t len);
• ⬛⚪ char *ft_strjoin(char const *s1, char const *s2);
• ⬛⚪ char *ft_strtrim(char const *s);
• ⬛⚪ void ft_strtiter(char *s, void (*f)(char *));
• ⬛⚪ void ft_striteri(char *s, void (*f)(unsigned int, char *));
• ⬛⚪ char *ft_strmap(char const *s, char (*f)(char));
• ⬛⚪ char *ft_strmapi(char const *s, char (*f)(unsigned int, char));
• ⬛⚫ char *ft_pathjoin(char const *s1, char const *s2);
• ⬛⚫ void ft_free_sarray(char ***s);

Parsing Functions

• ⬛⚪ char **ft_strsplit(char const *s, char c);
• ⬛⚫ char **ft_strssplit(char const *s, char const *c);
• ⬛⚫ int ft_gnl(const int fd, char **line, int keep_n);