From aa24497045a04852f1164819c12e0dca75619b73 Mon Sep 17 00:00:00 2001
From: David Gailleton <dgaillet@z4r11p4.42lyon.fr>
Date: Sun, 9 Nov 2025 20:16:25 +0100
Subject: [PATCH] memcpy and memmove fix

---
 ft_memcpy.c  | 14 ++++++++++----
 ft_memmove.c | 21 +++++++++++----------
 2 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/ft_memcpy.c b/ft_memcpy.c
index 4144b38..17897c7 100644
--- a/ft_memcpy.c
+++ b/ft_memcpy.c
@@ -6,7 +6,7 @@
 /*   By: dgaillet <dgaillet@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/11/05 11:46:16 by dgaillet          #+#    #+#             */
-/*   Updated: 2025/11/05 17:02:06 by dgaillet         ###   ########lyon.fr   */
+/*   Updated: 2025/11/09 20:00:45 by dgaillet         ###   ########lyon.fr   */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,9 +14,15 @@
 
 void	*ft_memcpy(void *dest, const void *src, size_t n)
 {
-	if (n <= 0)
+	size_t	i;
+
+	if (!dest && !src)
 		return (dest);
-	*((unsigned char *) dest) = *((unsigned char *) src);
-	ft_memcpy(dest + 1, src + 1, n - 1);
+	i = 0;
+	while (i < n)
+	{
+		((unsigned char *) dest)[i] = ((unsigned char *) src)[i];
+		i++;
+	}
 	return (dest);
 }
diff --git a/ft_memmove.c b/ft_memmove.c
index 1eb4a0b..0603738 100644
--- a/ft_memmove.c
+++ b/ft_memmove.c
@@ -6,28 +6,29 @@
 /*   By: dgaillet <dgaillet@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/11/05 13:17:42 by dgaillet          #+#    #+#             */
-/*   Updated: 2025/11/06 12:01:28 by dgaillet         ###   ########lyon.fr   */
+/*   Updated: 2025/11/09 20:15:29 by dgaillet         ###   ########lyon.fr   */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "libft.h"
 
-void	*ft_rev_memcpy(void *dest, const void *src, size_t n)
+static void	*ft_rev_memcpy(void *dest, const void *src, size_t n)
 {
-	if (n <= 0)
-	{
+	if ((!dest && !src) || n == 0)
 		return (dest);
+	n--;
+	while (n > 0)
+	{
+		((unsigned char *) dest)[n] = ((unsigned char *) src)[n];
+		n--;
 	}
-	*((char *) dest) = *((char *) src);
-	ft_rev_memcpy(dest - 1, src - 1, n - 1);
+	((unsigned char *) dest)[n] = ((unsigned char *) src)[n];
 	return (dest);
 }
 
 void	*ft_memmove(void *dest, const void *src, size_t n)
 {
 	if (dest < src)
-		ft_memcpy(dest, src, n);
-	else
-		ft_rev_memcpy(dest + (n - 1), src + (n - 1), n);
-	return (dest);
+		return (ft_memcpy(dest, src, n));
+	return (ft_rev_memcpy(dest, src, n));
 }