libft/ft_memcmp.c at main · fjgalan/libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memcmp.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: fgalan-n <fgalan-n@student.42malaga.com>   +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/09/25 13:45:11 by fgalan-n          #+#    #+#             */
/*   Updated: 2022/09/25 13:53:43 by fgalan-n         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

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