42_libft/src/ft_mem/ft_memcmp.c at main · PapyMonkey/42_libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memcmp.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: aguiri <aguiri@student.42nice.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/10/29 21:40:22 by aguiri            #+#    #+#             */
/*   Updated: 2021/10/31 12:26:34 by aguiri           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int	ft_memcmp(const void *s1, const void *s2, size_t n)
{
	unsigned char	*s1_tmp;
	unsigned char	*s2_tmp;

	if (n == 0)
		return (0);
	s1_tmp = (unsigned char *)s1;
	s2_tmp = (unsigned char *)s2;
	while (n > 1 && *s1_tmp == *s2_tmp)
	{
		s1_tmp++;
		s2_tmp++;
		n--;
	}
	return (*s1_tmp - *s2_tmp);
}