/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rzy <ry@student.42angouleme.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2026/08/23 23:34:29 by rzy               #+#    #+#             */
/*   Updated: 2026/08/23 23:37:29 by rzy              ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
#include "libft.h"

static int	ft_isspace(char c)
{
	return (c == ' ' || (c >= '\t' && c <= '\r'));
}

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

	result = 0;
	sign = 1;
	i = 0;
	while (ft_isspace(nptr[i]))
		++i;
	if (nptr[i] == '+' || nptr[i] == '-')
	{
		if (nptr[i] == '-')
			sign = -1;
		++i;
	}
	while (ft_isdigit(nptr[i]))
	{
		result = (result * 10) + (nptr[i] - '0');
		++i;
	}
	return (result * sign);
}