clock_subr.h revision 1.1 
1/*	$OpenBSD: clock_subr.h,v 1.1 1997/09/09 13:08:18 maja Exp $	*/
2/*	$NetBSD: clock_subr.h,v 1.2 1997/03/15 18:11:17 is Exp $	*/
3
4/*-
5 * Copyright (c) 1996 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Gordon W. Ross
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. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *        This product includes software developed by the NetBSD
22 *        Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 *    contributors may be used to endorse or promote products derived
25 *    from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40/*
41 * "POSIX time" to/from "YY/MM/DD/hh/mm/ss"
42 */
43struct clock_ymdhms {
44	u_short dt_year;
45	u_char dt_mon;
46	u_char dt_day;
47	u_char dt_wday;	/* Day of week */
48	u_char dt_hour;
49	u_char dt_min;
50	u_char dt_sec;
51};
52
53time_t clock_ymdhms_to_secs __P((struct clock_ymdhms *));
54void clock_secs_to_ymdhms __P((time_t, struct clock_ymdhms *));
55
56/*
57 * BCD to decimal and decimal to BCD.
58 */
59#define	FROMBCD(x)	(((x) >> 4) * 10 + ((x) & 0xf))
60#define	TOBCD(x)	(((x) / 10 * 16) + ((x) % 10))
61
62/* Some handy constants. */
63#define SECDAY		86400L
64#define SECYR		(SECDAY * 365)
65
66