ft_memcmp.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memcmp.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: atweek <atweek@student.42.fr>              +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/11/02 20:08:46 by ramil             #+#    #+#             */
/*   Updated: 2020/11/08 05:08:19 by atweek           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int	ft_memcmp(const void *s1, const void *s2, size_t n)
{
	size_t			i;
	unsigned char	*ptr1;
	unsigned char	*ptr2;

	i = 0;
	ptr1 = (unsigned char *)s1;
	ptr2 = (unsigned char *)s2;
	if (s1 == s2 || n == 0)
		return (0);
	while (i < n)
	{
		if (ptr1[i] != ptr2[i])
			return (ptr1[i] - ptr2[i]);
		i++;
	}
	return (0);
}