ft_memcmp.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memcmp.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: juchoi <juchoi@student.42seoul.kr>         +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/12/27 11:27:33 by juchoi            #+#    #+#             */
/*   Updated: 2021/01/20 12:05:16 by juchoi           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int		ft_memcmp(const void *s1, const void *s2, size_t n)
{
	const unsigned char		*str1;
	const unsigned char		*str2;
	size_t					i;

	i = 0;
	str1 = (const unsigned char *)s1;
	str2 = (const unsigned char *)s2;
	if (n == 0 || str1 == str2)
		return (0);
	while (i < n)
	{
		if (str1[i] != str2[i])
			return (str1[i] - str2[i]);
		i++;
	}
	return (0);
}