xref: /dragonfly/games/tetris/input.h (revision 7b1120e5)
1 /*	$OpenBSD: input.h,v 1.6 2017/08/13 02:12:16 tedu Exp $	*/
2 /*	$NetBSD: input.h,v 1.2 1995/04/22 07:42:36 cgd Exp $	*/
3 
4 /*-
5  * Copyright (c) 1992, 1993
6  *	The Regents of the University of California.  All rights reserved.
7  *
8  * This code is derived from software contributed to Berkeley by
9  * Chris Torek and Darren F. Provine.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  *
35  *	@(#)input.h	8.1 (Berkeley) 5/31/93
36  */
37 
38 /* Operations on timespecs. */
39 #define	timespecclear(tsp)	(tsp)->tv_sec = (time_t)((tsp)->tv_nsec = 0L)
40 #define	timespecsub(tsp, usp, vsp)					\
41 	do {								\
42 		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
43 		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
44 		if ((vsp)->tv_nsec < 0) {				\
45 			(vsp)->tv_sec--;				\
46 			(vsp)->tv_nsec += 1000000000L;			\
47 		}							\
48 	} while (/* CONSTCOND */ 0)
49 
50 int rwait(struct timespec *);
51 int tgetchar(void);
52 void tsleep(void);
53