#include	<lib9.h> intmemcmp(void *a1, void *a2, ulong n){	uchar *s1, *s2;	uint c1, c2; 	s1 = a1;	s2 = a2;	while(n > 0) {		c1 = *s1++;		c2 = *s2++;		if(c1 != c2) {			if(c1 > c2)				return 1;			return -1;		}		n--;	}	return 0;}