ft_memmove.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memmove.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: ratavare <ratavare@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/10/27 15:31:34 by ratavare          #+#    #+#             */
/*   Updated: 2022/10/31 12:31:06 by ratavare         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

void	*ft_memmove(void *dest, const void *src, size_t n)
{
	size_t	i;

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

/*int	main(void)
{
	char str[] = "abcdef";
	
	puts(str);
	ft_memmove(str +2, str +1, 5);
	puts(str);
}*/