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tws.h
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C/C++ Source or Header
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1994-02-23
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2KB
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80 lines
/* tws.h - header file for libtws date/time library */
/* Definition of the tws data structure. */
struct tws {
int tw_sec;
int tw_min;
int tw_hour;
int tw_mday;
int tw_mon;
int tw_year;
int tw_wday;
int tw_yday;
int tw_zone;
long tw_clock;
int tw_flags;
#define TW_NULL 0x0000
#define TW_SDAY 0x0007 /* how day-of-week was determined */
#define TW_SNIL 0x0000 /* not given */
#define TW_SEXP 0x0001 /* explicitly given */
#define TW_SIMP 0x0002 /* implicitly given */
#define TW_DST 0x0010 /* daylight savings time */
#define TW_ZONE 0x0020 /* use numeric timezones only */
#define TW_JUNK 0x0040 /* date string contained junk */
};
/* Declarations of routines. */
void twscopy( );
/* twscopy( &totws, &fromtws ) copies a tws */
int twsort( );
/* twsort( &tws1, &tws2 ) compares two tws's: 1 means tws1 is
later; -1 means tws1 is earlier; 0 means they are equal */
long twclock( );
/* twclock( &tws ) turns a tws into a time(3)-style clock value */
long twjuliandate( );
/* twjuliandate( &tws ) returns the Julian day number of a tws */
long twsubtract( );
/* twsubtract( &tws1, &tws2 ) returns seconds of difference */
/* These routines are functionally similar to the ctime(3) routines
in the standard Unix library. */
char *dctime( );
/* dctime( &tws ) returns a string for the date/time passed in */
struct tws *dlocaltime( );
/* dlocaltime( &clock ) turns a time(3) clock value into a tws */
struct tws *dgmtime( );
/* dgmtime( &clock ) turns a time(3) clock value into a tws */
char *dasctime( );
/* dasctime( &tws, flags ) turns a tws into a string */
char *dtimezone( );
/* dtimezone( offset, flags ) returns the name of the time zone */
char *dtimenow( );
/* dtimenow( ) returns a string for the current date/time */
struct tws *dparsetime( );
/* dparsetime( &str ) turns a string into a tws */
struct tws *dtwstime( );
/* dtwstime( ) returns a tws for the current date/time */
#ifdef ATZ
#define dtime(cl) dasctime( dlocaltime( cl ), TW_NULL )
#else ATZ
#define dtime(cl) dasctime( dlocaltime( cl ), TW_ZONE )
#endif ATZ
#define dtwszone(tw) dtimezone( tw -> tw_zone, tw -> tw_flags )
extern char *tw_dotw[], *tw_ldotw[], *tw_moty[];