libft/ft_memmove.c at master · sshresthh/libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memmove.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: sshresth <sshresth@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/03/10 22:19:36 by sshresth          #+#    #+#             */
/*   Updated: 2024/03/22 13:45:12 by sshresth         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

void	*ft_memmove(void *dst, const void *src, size_t len)
{
	unsigned char	*d;
	unsigned char	*s;

	d = (unsigned char *) dst;
	s = (unsigned char *) src;
	if (dst == src || !len)
		return (dst);
	if (dst > src)
	{
		while (len)
		{
			d[len - 1] = s[len - 1];
			len--;
		}
		return (dst);
	}
	ft_memcpy(dst, src, len);
	return (dst);
}