libft/ft_memcmp.c

29 lines
1.1 KiB
C

/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memcmp.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tosuman <timo42@proton.me> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/05/22 16:44:15 by tosuman #+# #+# */
/* Updated: 2023/06/02 20:03:03 by tischmid ### ########.fr */
/* */
/* ************************************************************************** */
#include <stddef.h>
int ft_memcmp(void const *s1, void const *s2, size_t n)
{
unsigned char *us1;
unsigned char *us2;
us1 = (unsigned char *) s1;
us2 = (unsigned char *) s2;
if (!n)
return (0);
while (n--)
if (*us1++ != *us2++)
return (*--us1 - *--us2);
return (0);
}