/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: fgras-ca <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/02/11 16:16:54 by fgras-ca          #+#    #+#             */
/*   Updated: 2023/02/21 09:57:55 by fgras-ca         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int	ft_atoi(const char *nptr)
{
	int	i;
	int	sign;
	int	res;

	i = 0;
	sign = 1;
	res = 0;
	while (nptr[i] == 32 || (nptr[i] >= 9 && nptr[i] <= 13))
		i++;
	if (nptr[i] == '-' || nptr[i] == '+')
	{
		if (nptr[i] == '-')
			sign = - (1);
		i++;
	}
	while (nptr[i] >= 48 && nptr[i] <= 57)
	{
		res = res * 10 + nptr[i] - 48;
		i++;
	}
	return (res * sign);
}