libft/ft_memmove.c at main · muhammadganiev/libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memmove.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: muganiev <gf.black.tv@gmail.com>           +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/05/16 14:40:25 by muganiev          #+#    #+#             */
/*   Updated: 2022/05/25 19:03:01 by muganiev         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

	if (!dst || !src)
		return (NULL);
	if (dst > src)
	{
		i = (int)len - 1;
		while (i >= 0)
		{
			*(char *)(dst + i) = *(char *)(src + i);
			i--;
		}
	}
	else
	{
		i = 0;
		while (i < (int)len)
		{
			*(char *)(dst + i) = *(char *)(src + i);
			i++;
		}
	}
	return (dst);
}