/*  * 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> void*memccpy(void *a1, void *a2, int c, ulong n){	uchar *s1, *s2; 	s1 = a1;	s2 = a2;	c &= 0xFF;	while(n > 0) {		if((*s1++ = *s2++) == c)			return s1;		n--;	}	return 0;}