/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <auth.h> ucharnvcsum(void *vmem, int n){	uchar *mem, sum;	int i; 	sum = 9;	mem = vmem;	for(i = 0; i < n; i++)		sum += mem[i];	return sum;}