xref: /titanic_51/usr/src/contrib/ast/src/lib/libast/tm/tmxleap.c (revision b4dd7d09880f14016feece03929a224eca1cf39a)
1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                 Eclipse Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *          http://www.eclipse.org/org/documents/epl-v10.html           *
11 *         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
12 *                                                                      *
13 *              Information and Software Systems Research               *
14 *                            AT&T Research                             *
15 *                           Florham Park NJ                            *
16 *                                                                      *
17 *                 Glenn Fowler <gsf@research.att.com>                  *
18 *                  David Korn <dgk@research.att.com>                   *
19 *                   Phong Vo <kpv@research.att.com>                    *
20 *                                                                      *
21 ***********************************************************************/
22 #pragma prototyped
23 /*
24  * Glenn Fowler
25  * AT&T Research
26  *
27  * Time_t conversion support
28  */
29 
30 #include <tmx.h>
31 
32 /*
33  * return t with leap seconds adjusted
34  * for direct localtime() access
35  */
36 
37 Time_t
38 tmxleap(Time_t t)
39 {
40 	register Tm_leap_t*	lp;
41 	uint32_t		sec;
42 
43 	tmset(tm_info.zone);
44 	if (tm_info.flags & TM_ADJUST)
45 	{
46 		sec = tmxsec(t);
47 		for (lp = &tm_data.leap[0]; sec < (lp->time - lp->total); lp++);
48 		t = tmxsns(sec + lp->total, tmxnsec(t));
49 	}
50 	return t;
51 }
52