42/42_INT_01_libft
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memmove fixed for the size_t len equal to zero

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Hugo LAMY
2019-11-28 15:05:47 +01:00
parent b542d8adc0
commit d4ae1c7d34
2 changed files with 57 additions and 22 deletions
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55
srcd/part1/ft_memmove.c
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@@ -6,7 +6,7 @@
/* By: hulamy <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/11/25 13:56:25 by hulamy #+# #+# */
/* Updated: 2019/11/25 13:56:29 by hulamy ### ########.fr */
/* Updated: 2019/11/28 15:04:39 by hulamy ### ########.fr */
/* */
/* ************************************************************************** */
@@ -14,22 +14,55 @@
** copy n characters from src to dst in a non destructive way and return dst
*/
/*
** #include <libc.h>
**
** size_t ft_strlen(const char *str)
** {
** size_t i;
**
** i = 0;
** while (str[i])
** i++;
** return (i);
** }
**
** void *ft_memmove(void *dst, const void *src, size_t len);
**
** //int main(int ac, char **av)
** int main(void)
** {
** char *src = "this is a good nyancat !\r\n";
** char dst[0xF0];
** int size = strlen(src);
**
** // if (ac == 4)
** // printf("%s\n", ft_memmove(av[1], av[2], atoi(av[3])));
**
** ft_memmove(dst, src, size);
** printf("%s", dst);
** return (0);
** }
*/
#include "libft.h"
void *ft_memmove(void *dst, const void *src, size_t len)
{
int i;
char *source;
char *dest;
size_t i;
char *cpsrc;
char *cpdst;
i = -1;
source = (char *)src;
dest = (char *)dst;
if (source < dest)
while ((int)(--len) >= 0)
dest[len] = source[len];
cpsrc = (char *)src;
cpdst = (char *)dst;
if (dst == src)
return (dst);
if (cpsrc < cpdst)
while (len--)
cpdst[len] = cpsrc[len];
else
while (++i < (int)len)
dest[i] = source[i];
while (++i < len)
cpdst[i] = cpsrc[i];
return (dst);
}