ft_memcmp.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memcmp.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: cbarbier <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2016/07/12 12:31:51 by cbarbier          #+#    #+#             */
/*   Updated: 2016/11/04 12:31:16 by cbarbier         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int	ft_memcmp(const void *s1, const void *s2, size_t n)
{
	unsigned char *p1;
	unsigned char *p2;

	p1 = (unsigned char *)s1;
	p2 = (unsigned char *)s2;
	while (n && *p1 == *p2)
	{
		n--;
		p1++;
		p2++;
	}
	if (!n)
		return (0);
	return ((unsigned char)(*p1) - (unsigned)(*p2));
}