/**
 * The memset() function fills the first n bytes of the memory area pointed to by s with the constant byte c.
 * @param s
 * @param c
 * @param n
 * @return
 */
void *
memset(void *s, int c, long unsigned n)
{
  char *pDest = (char *)s;
  for (unsigned i = 0; i < n; ++i) pDest[i] = c;
  return s;
}