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ft_itoa

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This commit is contained in:
Tanguy MAZE 2018-04-08 12:47:23 +02:00
parent d86822d8bb
commit 4915727f74
3 changed files with 112 additions and 62 deletions
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4
Makefile
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@ -6,7 +6,7 @@
# By: tmaze <tmaze@student.42.fr> +#+ +:+ +#+ #
# +#+#+#+#+#+ +#+ #
# Created: 2018/04/07 12:47:06 by tmaze #+# #+# #
# Updated: 2018/04/08 00:51:46 by tmaze ### ########.fr #
# Updated: 2018/04/08 11:57:19 by tmaze ### ########.fr #
# #
#******************************************************************************#
@ -17,7 +17,7 @@ CCSTD = -std=c99
NAME = libft.a
SRCS = ft_memset.c ft_bzero.c ft_memcpy.c ft_memccpy.c ft_memmove.c ft_memchr.c ft_memcmp.c ft_strlen.c ft_strdup.c ft_strcpy.c ft_strncpy.c ft_strcat.c ft_strncat.c ft_strchr.c ft_strrchr.c ft_strstr.c ft_strnstr.c ft_strcmp.c ft_strncmp.c ft_atoi.c ft_isalpha.c ft_isdigit.c ft_isalnum.c ft_isascii.c ft_isprint.c ft_toupper.c ft_tolower.c \
ft_memalloc.c ft_memdel.c ft_strnew.c ft_strdel.c ft_strclr.c ft_striter.c ft_striteri.c ft_strmap.c ft_strmapi.c ft_strequ.c ft_strnequ.c ft_strsub.c ft_strjoin.c ft_strtrim.c ft_strsplit.c ft_putchar.c ft_putstr.c ft_putendl.c ft_putchar_fd.c ft_putstr_fd.c \
ft_memalloc.c ft_memdel.c ft_strnew.c ft_strdel.c ft_strclr.c ft_striter.c ft_striteri.c ft_strmap.c ft_strmapi.c ft_strequ.c ft_strnequ.c ft_strsub.c ft_strjoin.c ft_strtrim.c ft_strsplit.c ft_itoa.c ft_putchar.c ft_putstr.c ft_putendl.c ft_putchar_fd.c ft_putstr_fd.c \
ft_lstnew.c
OBJS = $(SRCS:.c=.o)

48
ft_itoa.c Normal file
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@ -0,0 +1,48 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_itoa.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tmaze <tmaze@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2018/04/08 11:20:12 by tmaze #+# #+# */
/* Updated: 2018/04/08 12:45:55 by tmaze ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
static unsigned long ft_abs(int n)
{
if (n < 0)
return ((unsigned long)n * -1);
return ((unsigned long)n);
}
char *ft_itoa(int n)
{
unsigned long mult;
int nb_nbr;
int sign;
unsigned long nbr;
char *ret;
mult = 10;
nb_nbr = 1;
nbr = ft_abs(n);
sign = (n < 0);
while (mult < nbr && (nb_nbr++))
mult *= 10;
nb_nbr += sign;
if ((ret = ft_strnew(nb_nbr)) == NULL)
return (NULL);
nb_nbr = 0;
if (sign && (++nb_nbr))
ret[0] = '-';
while (mult > 1)
{
ret[nb_nbr++] = '0' + ((nbr % mult) / (mult / 10));
mult /= 10;
}
return (ret);
}

10
libft.h
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@ -6,7 +6,7 @@
/* By: tmaze <tmaze@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2018/04/08 00:12:36 by tmaze #+# #+# */
/* Updated: 2018/04/08 00:33:10 by tmaze ### ########.fr */
/* Updated: 2018/04/08 11:28:53 by tmaze ### ########.fr */
/* */
/* ************************************************************************** */
@ -34,9 +34,10 @@ typedef struct s_list
void *ft_memset(void *b, int c, size_t len);
void ft_bzero(void *s, size_t n);
void *ft_memcpy(void *restrict dest, const void *restrict src, size_t n);
void *ft_memccpy(void *restrict dest, const void *restrict src, int c,\
void *ft_memcpy(void *restrict dest, const void *restrict src,\
size_t n);
void *ft_memccpy(void *restrict dest, const void *restrict src,\
int c, size_t n);
void *ft_memmove(void *dest, const void *src, size_t len);
void *ft_memchr(const void *s, int c, size_t n);
int ft_memcmp(const void *s1, const void *s2, size_t n);
@ -50,7 +51,8 @@ size_t ft_strlcat(char *dst, const char *src, size_t size);
char *ft_strchr(const char *s, int c);
char *ft_strrchr(const char *s, int c);
char *ft_strstr(const char *haystack, const char *needle);
char *ft_strnstr(const char *haystack, const char *needle, size_t len);
char *ft_strnstr(const char *haystack, const char *needle,\
size_t len);
int ft_strcmp(const char *s1, const char *s2);
int ft_strncmp(const char *s1, const char *s2, size_t n);
int ft_atoi(const char *str);