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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/14 17:06:22 by rbousset #+# #+# */
/* Updated: 2020/02/14 17:07:24 by rbousset ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include <libft.h>
#include <inttypes.h>
static int8_t
ft_setsign(const char c)
{
int8_t sign;
sign = 1;
if (c == '-')
sign = -1;
return (sign);
}
static uint8_t
ft_seti(const char *str)
{
uint8_t i;
i = 0;
while (ft_isspace(str[i]))
i++;
return (i);
}
int
ft_atoi(const char *str)
{
uint8_t i;
int8_t sign;
long nb;
i = ft_seti(str);
nb = 0;
sign = 1;
if (str[i] == '+' || str[i] == '-')
sign = ft_setsign(str[i++]);
while (ft_isdigit(str[i]))
{
if (nb * 10 + (str[i] - 48) < nb)
{
if (sign < 0)
return (0);
return (-1);
}
nb = nb * 10 + (str[i] - 48);
i++;
}
nb *= sign;
return ((int)nb);
}
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