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ft_memmove.c
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ft_memmove.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memmove.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: wleite <wleite@student.42sp.org.br> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/07/27 19:24:28 by wleite #+# #+# */
/* Updated: 2021/08/04 04:48:46 by wleite ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
static void *memrcpy(void *dst, const void *src, size_t len)
{
unsigned char *ptr_dest;
unsigned char *ptr_src;
if ((!dst && !src) || !len)
return (dst);
ptr_dest = (unsigned char *)dst + len - 1;
ptr_src = (unsigned char *)src + len - 1;
while (len--)
*ptr_dest-- = *ptr_src--;
return (dst);
}
void *ft_memmove(void *dst, const void *src, size_t len)
{
if ((!dst && !src) || !len)
return (dst);
if (dst <= src)
return (ft_memcpy(dst, src, len));
else
return (memrcpy(dst, src, len));
}