ft_memmove.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memmove.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: omoudni <omoudni@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/11/23 18:57:07 by omoudni           #+#    #+#             */
/*   Updated: 2021/12/01 07:50:04 by omoudni          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

void	*ft_memmove(void *dest, const void *src, size_t n)
{
	char		*d;
	const char	*s;
	char		*lastd;
	const char	*lasts;

	d = dest;
	s = src;
	if (d < s)
	{
		while (n--)
			*d++ = *s++;
	}
	else
	{
		lasts = s + (n - 1);
		lastd = d + (n - 1);
		while (n--)
			*lastd-- = *lasts--;
	}
	return (dest);
}