/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/11/25 13:54:29 by hulamy            #+#    #+#             */
/*   Updated: 2019/11/25 13:54:35 by hulamy           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int		ft_atoi(const char *str)
{
	long long	nbr;
	int			i;
	int			n;

	i = 0;
	n = 1;
	nbr = 0;
	while ((str[i] == 32) || (str[i] > 8 && str[i] < 14))
		i++;
	if (str[i] == '-')
		n = -1;
	if (str[i] == '+' || str[i] == '-')
		i++;
	while (str[i] >= '0' && str[i] <= '9')
	{
		if ((nbr >= 922337203685477580
						&& ((str[i] > 8 && n < 0) || (str[i] > 7 && n > 0))))
			return ((n > 0) ? -1 : 0);
		else
			nbr = nbr * 10 + (str[i++] - '0');
	}
	return (nbr * n);
}