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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atol.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: kdx <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/07/25 16:53:01 by kdx #+# #+# */
/* Updated: 2022/10/07 13:25:39 by kdx ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
#include <limits.h>
t_i64 ft_atol(const char *nptr)
{
t_i64 result;
int sign;
while (*nptr == ' ' || *nptr == '\n' || *nptr == '\t'
|| *nptr == '\r' || *nptr == '\f' || *nptr == '\v')
nptr++;
sign = 1;
if (*nptr == '+' || *nptr == '-')
{
if (*nptr == '-')
sign = -sign;
nptr++;
}
result = 0;
while (*nptr >= '0' && *nptr <= '9')
{
result = result * 10 + (*nptr - '0') * sign;
if (result >= LONG_MAX / 10 || result <= LONG_MIN / 10)
return (result);
nptr++;
}
return (result);
}
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