diff --git a/Makefile b/Makefile
index fe010d5..4dab60b 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@
 #    By: adjoly <adjoly@student.42angouleme.fr>     +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2023/11/01 11:03:22 by adjoly            #+#    #+#              #
-#    Updated: 2024/02/08 16:49:00 by adjoly           ###   ########.fr        #
+#    Updated: 2024/02/15 13:55:20 by adjoly           ###   ########.fr        #
 #                                                                              #
 # **************************************************************************** #
 
@@ -45,6 +45,7 @@ SRCS = is/ft_isalnum.c \
 		print/ft_putstr.c \
 		print/ft_putstr_fd.c \
 		str/ft_atoi.c \
+		str/ft_atoll.c \
 		str/ft_itoa.c \
 		str/ft_split.c \
 		str/ft_strchr.c \
diff --git a/libft.h b/libft.h
index c8189c4..fa69898 100644
--- a/libft.h
+++ b/libft.h
@@ -6,7 +6,7 @@
 /*   By: adjoly <adjoly@student.42angouleme.fr>     +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/11/01 10:06:03 by adjoly            #+#    #+#             */
-/*   Updated: 2024/02/08 16:50:59 by adjoly           ###   ########.fr       */
+/*   Updated: 2024/02/15 13:55:01 by adjoly           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -26,67 +26,68 @@ typedef struct s_list
 	struct s_list	*next;
 }					t_list;
 
-int		ft_atoi(const char	*nptr);
-void	*ft_calloc(size_t nmemb, size_t size);
-int		ft_isalnum(int c);
-int		ft_isalpha(int c);
-int		ft_isascii(int c);
-int		ft_isdigit(int c);
-void	ft_bzero(void *s, size_t n);
-void	*ft_memset(void *s, int c, size_t n);
-void	*ft_memmove(void *dest, const void *src, size_t n);
-void	*ft_memcpy(void *dest, const void *src, size_t n);
-void	ft_putchar_fd(char c, int fd);
-void	ft_putnbr_fd(int n, int fd);
-char	*ft_strdup(const char *s);
-void	ft_putstr_fd(char *s, int fd);
-char	*ft_strchr(const char *s, int c);
-size_t	ft_strlcpy(char	*dst, const char	*src, size_t	size);
-size_t	ft_strlen(const char *s);
-char	*ft_substr(char const *s, unsigned int start, size_t len);
-int		ft_tolower(int c);
-int		ft_toupper(int c);
-size_t	ft_strlcat(char *dst, const char *src, size_t size);
-char	*ft_strjoin(char const *s1, char const *s2);
-int		ft_strncmp(const char *s1, const char *s2, size_t n);
-int		ft_isprint(int c);
-void	*ft_memchr(const void *s, int c, size_t n);
-char	*ft_itoa(int n);
-void	*ft_memmove(void *dest, const void *src, size_t n);
-void	*ft_memchr(const void *s, int c, size_t n);
-int		ft_memcmp(const void *s1, const void *s2, size_t n);
-char	*ft_strrchr(const char *s, int c);
-char	*ft_strnstr(const char *big, const char *little, size_t len);
-void	ft_putendl_fd(char *s, int fd);
-char	*ft_strtrim(char const *s1, char const *set);
-char	**ft_split(char const *s, char c);
-char	*ft_strmapi(char const *s, char (*f)(unsigned int, char));
-void	ft_striteri(char *s, void (*f)(unsigned int, char *));
+long long	ft_atoll(const char	*nptr);
+int			ft_atoi(const char	*nptr);
+void		*ft_calloc(size_t nmemb, size_t size);
+int			ft_isalnum(int c);
+int			ft_isalpha(int c);
+int			ft_isascii(int c);
+int			ft_isdigit(int c);
+void		ft_bzero(void *s, size_t n);
+void		*ft_memset(void *s, int c, size_t n);
+void		*ft_memmove(void *dest, const void *src, size_t n);
+void		*ft_memcpy(void *dest, const void *src, size_t n);
+void		ft_putchar_fd(char c, int fd);
+void		ft_putnbr_fd(int n, int fd);
+char		*ft_strdup(const char *s);
+void		ft_putstr_fd(char *s, int fd);
+char		*ft_strchr(const char *s, int c);
+size_t		ft_strlcpy(char	*dst, const char	*src, size_t	size);
+size_t		ft_strlen(const char *s);
+char		*ft_substr(char const *s, unsigned int start, size_t len);
+int			ft_tolower(int c);
+int			ft_toupper(int c);
+size_t		ft_strlcat(char *dst, const char *src, size_t size);
+char		*ft_strjoin(char const *s1, char const *s2);
+int			ft_strncmp(const char *s1, const char *s2, size_t n);
+int			ft_isprint(int c);
+void		*ft_memchr(const void *s, int c, size_t n);
+char		*ft_itoa(int n);
+void		*ft_memmove(void *dest, const void *src, size_t n);
+void		*ft_memchr(const void *s, int c, size_t n);
+int			ft_memcmp(const void *s1, const void *s2, size_t n);
+char		*ft_strrchr(const char *s, int c);
+char		*ft_strnstr(const char *big, const char *little, size_t len);
+void		ft_putendl_fd(char *s, int fd);
+char		*ft_strtrim(char const *s1, char const *set);
+char		**ft_split(char const *s, char c);
+char		*ft_strmapi(char const *s, char (*f)(unsigned int, char));
+void		ft_striteri(char *s, void (*f)(unsigned int, char *));
 
-t_list	*ft_lstnew(void *content);
-void	ft_lstadd_front(t_list **lst, t_list *new);
-int		ft_lstsize(t_list *lst);
-t_list	*ft_lstlast(t_list *lst);
-void	ft_lstadd_back(t_list **lst, t_list *new);
-void	ft_lstdelone(t_list *lst, void (*del)(void *));
-void	ft_lstclear(t_list **lst, void (*del)(void *));
-void	ft_lstiter(t_list *lst, void (*f)(void *));
-t_list	*ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *));
+t_list		*ft_lstnew(void *content);
+void		ft_lstadd_front(t_list **lst, t_list *new);
+int			ft_lstsize(t_list *lst);
+t_list		*ft_lstlast(t_list *lst);
+void		ft_lstadd_back(t_list **lst, t_list *new);
+void		ft_lstdelone(t_list *lst, void (*del)(void *));
+void		ft_lstclear(t_list **lst, void (*del)(void *));
+void		ft_lstiter(t_list *lst, void (*f)(void *));
+t_list		*ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *));
 
-void	ft_putchar(char c);
-void	ft_putstr(char *s);
-void	ft_putnbrbase_fd(int n, char *base, int fd);
-void	ft_putnbrbase(int n, char *base);
-void	ft_putnbr(int n);
+void		ft_putchar(char c);
+void		ft_putstr(char *s);
+void		ft_putnbrbase_fd(int n, char *base, int fd);
+void		ft_putnbrbase(int n, char *base);
+void		ft_putnbr(int n);
 
-int		ft_printf(const char *format, ...);
-int		ft_printconversion(char conversion, va_list args);
-int		ft_putnbrulong(unsigned int n);
-int		ft_putaddr(void *ptr);
-int		ft_putstr_p(char *s);
-int		ft_putnbrbase_p(unsigned long int n, char *base);
-int		ft_putnbrbase_pf(unsigned int n, char *base);
-int		ft_putchar_p(char c);
-int		ft_putnbr_p(int n);
-size_t	ft_strlen(const char *s);
+int			ft_printf(const char *format, ...);
+int			ft_printconversion(char conversion, va_list args);
+int			ft_putnbrulong(unsigned int n);
+int			ft_putaddr(void *ptr);
+int			ft_putstr_p(char *s);
+int			ft_putnbrbase_p(unsigned long int n, char *base);
+int			ft_putnbrbase_pf(unsigned int n, char *base);
+int			ft_putchar_p(char c);
+int			ft_putnbr_p(int n);
+size_t		ft_strlen(const char *s);
 #endif
diff --git a/str/ft_atoll.c b/str/ft_atoll.c
new file mode 100644
index 0000000..276e497
--- /dev/null
+++ b/str/ft_atoll.c
@@ -0,0 +1,35 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_atoll.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42angouleme.fr>     +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 09:00:27 by adjoly            #+#    #+#             */
+/*   Updated: 2024/02/15 13:49:15 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+long long	ft_atoll(const char	*nptr)
+{
+	char		sign;
+	long long	nbr;
+
+	sign = 1;
+	nbr = 0;
+	while ((*nptr >= 7 && *nptr <= 13) || *nptr == 32)
+		nptr++;
+	if (*nptr == '-')
+	{
+		sign *= -1;
+		nptr++;
+	}
+	else if (*nptr == '+')
+		nptr++;
+	while (*nptr >= '0' && *nptr <= '9')
+	{
+		nbr = nbr * 10 + (*nptr - '0');
+		nptr++;
+	}
+	return (nbr * sign);
+}