/* * The authors of this software are Rob Pike and Ken Thompson. *              Copyright (c) 2002 by Lucent Technologies. * Permission to use, copy, modify, and distribute this software for any * purpose without fee is hereby granted, provided that this entire notice * is included in all copies of any software which is or includes a copy * or modification of this software and in all copies of the supporting * documentation for such software. * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. */#include "lib9.h" intvsnprint(char *buf, int len, char *fmt, va_list args){	Fmt f; 	if(len <= 0)		return -1;	f.runes = 0;	f.start = buf;	f.to = buf;	f.stop = buf + len - 1;	f.flush = nil;	f.farg = nil;	f.nfmt = 0;	f.args = args;	dofmt(&f, fmt);	*(char*)f.to = '\0';	return (char*)f.to - buf;}