/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memmove.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rparodi <marvin@42.fr>                     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/11/07 16:51:35 by rparodi           #+#    #+#             */
/*   Updated: 2025/09/01 16:41:47 by rparodi          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <unistd.h>

char	*ft_checks(char *s, char *d, size_t n)
{
	size_t	i;

	i = 0;
	if (d < s)
	{
		while (i < n)
		{
			d[i] = s[i];
			i++;
		}
	}
	else
	{
		i = n;
		while (i > 0)
		{
			i--;
			d[i] = s[i];
		}
	}
	return (d);
}

/**
 * @brief Copies memory with overlap handling
 * 
 * @param dest Pointer to the destination memory area
 * @param src Pointer to the source memory area
 * @param n Number of bytes to copy from src to dest
 * 
 * @return A pointer to the destination memory area dest
 */
void	*ft_memmove(void *dest, const void *src, size_t n)
{
	char	*d;
	char	*s;

	if (!dest && !src)
		return (NULL);
	d = (char *)dest;
	s = (char *)src;
	ft_checks(s, d, n);
	return (dest);
}