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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_itoa.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: kdx <kdx @student.42angouleme.fr +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/09/28 19:00:04 by kdx #+# #+# */
/* Updated: 2022/10/13 22:43:21 by kdx ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
static char *_itoa(long v, int sign, long div, char *ptr)
{
size_t i;
i = 0;
if (sign == -1)
{
ptr[i] = '-';
i += 1;
}
while (div / 10 > 0)
{
div /= 10;
ptr[i] = '0' + v / div % 10;
i += 1;
}
ptr[i] = '\0';
return (ptr);
}
char *ft_itoa(int n)
{
long v;
int sign;
long div;
size_t i;
char *ptr;
if (n == 0)
return (ft_strdup("0"));
v = n;
sign = (v > 0) - (v < 0);
v *= sign;
div = 1;
i = (sign == -1);
while (div <= v && i + 1)
{
i += 1;
div *= 10;
}
ptr = malloc(i + 1);
if (ptr == NULL)
return (NULL);
return (_itoa(v, sign, div, ptr));
}
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