ft_atoll.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoll.c                                         :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kokaimov <kokaimov@student.42berlin.de>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/02/23 18:45:14 by kokaimov          #+#    #+#             */
/*   Updated: 2024/02/23 18:45:14 by kokaimov         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

long long int	ft_atoll(const char *nptr)
{
	short			i;
	short			minus;
	long long int	ans;

	i = 0;
	minus = 1;
	ans = 0;
	while (nptr[i] == ' ' || nptr[i] == '\t' || nptr[i] == '\n'
		|| nptr[i] == '\v' || nptr[i] == '\f' || nptr[i] == '\r')
		i++;
	if (nptr[i] == '-')
		minus = -1;
	if (nptr[i] == '-' || nptr[i] == '+')
		i++;
	while (nptr[i] >= '0' && nptr[i] <= '9')
		ans = ans * 10 + (nptr[i++] - '0');
	return (ans * minus);
}