/*      @(#)time.h 2.9 87/01/17 SMI; from UCB 7.1 6/4/86        */

/*
	Definitions of various structures used on UNIX for
	time-related syscalls.
*/

/*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef _UNIX_TIME_
#define _UNIX_TIME_

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Structure returned by gettimeofday(2) system call,
 * and used in other calls.
 */
#ifndef __DECC
struct timeval
{
	long    tv_sec;         /* seconds */
	long    tv_usec;        /* and microseconds */
};
#else
#if (__DECC_VER < 50200000) && (__VMS_VER < 70000000)
struct timeval
{
	long    tv_sec;         /* seconds */
	long    tv_usec;        /* and microseconds */
};
#endif /* __DECC_VER */
#endif /* __DECC */
struct timezone
{
	int     tz_minuteswest; /* minutes west of Greenwich */
	int     tz_dsttime;     /* type of dst correction */
};

#define DST_NONE        0       /* not on dst */
#define DST_USA         1       /* USA style dst */
#define DST_AUST        2       /* Australian style dst */
#define DST_WET         3       /* Western European dst */
#define DST_MET         4       /* Middle European dst */
#define DST_EET         5       /* Eastern European dst */
#define DST_CAN         6       /* Canada */
#define DST_GB          7       /* Great Britain and Eire */
#define DST_RUM         8       /* Rumania */
#define DST_TUR         9       /* Turkey */
#define DST_AUSTALT     10      /* Australian style with shift in 1986 */

/*
 * Operations on timevals.
 *
 * NB: timercmp does not work for >= or <=.
 */
#define timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
#define timercmp(tvp, uvp, cmp) \
	((tvp)->tv_sec cmp (uvp)->tv_sec || \
	 (tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
#define timerclear(tvp)         (tvp)->tv_sec = (tvp)->tv_usec = 0

/*
 * Names of the interval timers, and structure
 * defining a timer setting.
 */
#define ITIMER_REAL     0
#define ITIMER_VIRTUAL  1
#define ITIMER_PROF     2

#ifndef __DECC
struct  itimerval
{
	struct  timeval it_interval;    /* timer interval */
	struct  timeval it_value;       /* current value */
};
#else
#if (__DECC_VER < 50200000) && (__VMS_VER < 70000000)
struct  itimerval
{
	struct  timeval it_interval;    /* timer interval */
	struct  timeval it_value;       /* current value */
};
#endif /* __DECC_VER */
#endif /* __DECC */

#ifndef KERNEL
#include <time.h>
#endif

#ifdef __cplusplus
}
#endif

#endif /*!_UNIX_TIME_*/