/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atol.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/04/26 16:18:28 by dkaiser           #+#    #+#             */
/*   Updated: 2024/04/26 17:56:54 by dkaiser          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "push_swap.h"

long	ft_atol(const char *str)
{
	long	result;
	int		i;
	int		posneg;

	posneg = 1;
	result = 0;
	i = 0;
	while ((str[i] >= '\t' && str[i] <= '\r') || str[i] == ' ')
	{
		i++;
	}
	if (str[i] == '-')
	{
		posneg = -1;
		i++;
	}
	else if (str[i] == '+')
		i++;
	while (str[i] >= '0' && str[i] <= '9')
	{
		result = 10 * result + str[i] - '0';
		i++;
	}
	return (result * posneg);
}