#include <lib9.h>#define uintptr_t	uintptr void *memset(void *dest, int c, size_t n){	unsigned char *s = dest;	size_t k; 	/* Fill head and tail with minimal branching. Each	 * conditional ensures that all the subsequently used	 * offsets are well-defined and in the dest region. */ 	if (!n) return dest;	s[0] = c;	s[n-1] = c;	if (n <= 2) return dest;	s[1] = c;	s[2] = c;	s[n-2] = c;	s[n-3] = c;	if (n <= 6) return dest;	s[3] = c;	s[n-4] = c;	if (n <= 8) return dest; 	/* Advance pointer to align it at a 4-byte boundary,	 * and truncate n to a multiple of 4. The previous code	 * already took care of any head/tail that get cut off	 * by the alignment. */ 	k = -(uintptr_t)s & 3;	s += k;	n -= k;	n &= -4; 	/* Pure C fallback with no aliasing violations. */	for (; n; n--, s++) *s = c; 	return dest;}