ft_memmove.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memmove.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mmita <mmita@student.42.fr>                +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/10/08 14:22:05 by mmita             #+#    #+#             */
/*   Updated: 2022/10/08 15:55:00 by mmita            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"
#include <string.h>

void	*ft_memmove(void *dst, const void *src, size_t len)
{
	size_t	i;

	if (!dst && !src)
	{
		return (0);
	}
	i = 0;
	if ((size_t)dst - (size_t)src < len)
	{
		i = len - 1;
		while (i < len)
		{
			((unsigned char *)dst)[i] = ((unsigned char *)src)[i];
			i--;
		}
	}
	else
	{
		while (i < len)
		{
			((unsigned char *)dst)[i] = ((unsigned char *)src)[i];
			i++;
		}
	}
	return (dst);
}