/*
	Copyright 1989, 1990, 1992 Digital Equipment Corporation
	All rights reserved.

	This software is furnished under a license and may be used and
	copied only in accordance with the terms of such license and with 
	the inclusion of the above copyright notice.  This software
	and any copies shall not be provided to any other person.  No 
	title to or ownership of the software is hereby transferred.  The 
	information in this software is subject to change without notice.
	DIGITAL assumes no responsibility for the use, functionality or 
	reliability of its software on equipment which is not supplied by 
	DIGITAL.

	time.h

*/

#ifndef __TIME_H
#define __TIME_H


	/* Macro Defintions: */

#ifndef __DEFINED_NULL_MACRO
#define __DEFINED_NULL_MACRO

#define NULL ((void *) 0)

#endif


#define	CLOCKS_PER_SEC	( clock() )

	/* Typedef definitions: */

#ifndef __DEFINED_SIZE_T
#define __DEFINED_SIZE_T

typedef unsigned int size_t;

#endif

typedef  long int clock_t;

typedef  long int  time_t;


struct  tm
{
int	tm_sec,		/* seconds after the minute -- [ 0, 60 ] */
	tm_min,		/* minutes after the hour   -- [ 0, 59 ] */
	tm_hour,	/* hours since midnight     -- [ 0, 23 ] */
	tm_mday,	/* day of the month         -- [ 1, 31 ] */
	tm_mon,		/* months since January     -- [ 0, 11 ] */
	tm_year,	/* years since 1900         -- [ 0, .. ] */
	tm_wday,	/* days since Sunday        -- [ 0,  6 ] */
	tm_yday,	/* days since January 1     -- [ 0,365 ] */
	tm_isdst;	/* Daylight Saving Time Flag-- [-1,  1 ] */
			/* -1 info. not available   		 */
			/*  0 D.S.T. IS-NOT in effect         	 */
			/*  1 D.S.T. IS     in effect  	 	 */
};



/*
**	For field 'tm_isdst'
*/

#define	_DST_INFO_NOT_AVAILABLE	(-1)
#define	_DST_IS_NOT_IN_EFFECT	 (0)
#define	_DST_IS_IN_EFFECT	 (1)

#ifndef __STDC__

#define	CLK_TCK	  CLOCKS_PER_SEC
#define	clock	  C$CLCK
#define	mktime	  C$MKTM
#define	time	  C$TIME
#define	asctime	  C$ASTM
#define	ctime	  C$CTIM
#define	gmtime	  C$GMTM
#define	localtime C$LCTM
#define	strftime  C$SFTM
#define	__tzset	  C$TZSE

#endif


#pragma linkage c clock , difftime , mktime  , time, asctime, ctime
#pragma linkage c gmtime, localtime, strftime, __tzset



	/* Time Manipulation Functions: */

clock_t clock    (void);
double  difftime (time_t      __time1 , time_t __time0 );
time_t  mktime   (struct tm * __timeptr);
time_t  time     (time_t    * __timer);


#define difftime(__time1 , __time0) (double)( (__time1) - (__time0) )

	/* Time Conversions Functions: */

char      *asctime   (const struct tm * __timeptr);
char   	  *ctime     (const time_t    * __timer);
struct tm *gmtime    (const time_t    * __timer);
struct tm *localtime (const time_t    * __timer);
size_t    strftime   (char            * __s     , size_t            __maxsize,
		      const char      * __format, const struct tm * __timeptr);


void	__tzset(int , int );

#endif
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