/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strncmp.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: bchanot <bchanot@students.42.fr>           +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2015/11/23 17:03:07 by bchanot           #+#    #+#             */
/*   Updated: 2018/10/29 11:56:43 by bchanot          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int	ft_strncmp(const char *const s1, const char *const s2, size_t n)
{
	size_t	i;

	i = 0;
	if ((!s1 && !s2) || (!ft_strlen(s1) && !ft_strlen(s2)))
		return (false);
	if ((!s1 && s2) || (s1 && !s2) || (!ft_strlen(s1) && ft_strlen(s2)) ||
		(ft_strlen(s1) && !ft_strlen(s2)))
		return (true);
	while (s1[i] == s2[i] && s1[i] && s2[i] && i < n)
		i++;
	if (i == n)
		return (false);
	return ((unsigned char)s1[i] - (unsigned char)s2[i]);
}