#include <stddef.h>
#include <stdint.h>
#include <string.h>

#define LOWS(x) (((x)*0-1) / 255)

void *memset(void *d, int c, size_t n)
{
	unsigned char *cd = (unsigned char *)d;
	const size_t wc = LOWS(wc) * (unsigned char)c;
	size_t *wd;

	c = (unsigned char)c;

	if (n < sizeof(size_t)) goto bytewise;

	for (; (uintptr_t)d % sizeof(size_t); *cd++ = c, n--);

	for (wd = (size_t *)cd
	     ; n >= sizeof(size_t)
	     ; *wd++ = wc, n -= sizeof(size_t));
	cd = (unsigned char *)wd;

bytewise:
	for (; n; *cd++ = c, n--);

	return d;
}