time.h File Reference

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Macros
#define	DIFFTIME   0x19db1ded53e8000ULL
#define	DIFFDAYS   (3 * DAYSPER100YEARS + 17 * DAYSPER4YEARS + 1 * DAYSPERYEAR)
#define	DAYSPERYEAR   365
#define	DAYSPER4YEARS   (4*DAYSPERYEAR+1)
#define	DAYSPER100YEARS   (25*DAYSPER4YEARS-1)
#define	DAYSPER400YEARS   (4*DAYSPER100YEARS+1)
#define	SECONDSPERDAY   (24*60*60)
#define	SECONDSPERHOUR   (60*60)
#define	LEAPDAY   59

Functions
static __inline __time64_t	FileTimeToUnixTime (const FILETIME *FileTime, USHORT *millitm)
static __inline long	leapyears_passed (long days)
static __inline long	leapdays_passed (long days)
static __inline long	years_passed (long days)

Variables
long	dst_begin
long	dst_end

Macro Definition Documentation

DAYSPER100YEARS

#define DAYSPER100YEARS   (25*DAYSPER4YEARS-1)

Definition at line 6 of file time.h.

DAYSPER400YEARS

#define DAYSPER400YEARS   (4*DAYSPER100YEARS+1)

Definition at line 7 of file time.h.

DAYSPER4YEARS

#define DAYSPER4YEARS   (4*DAYSPERYEAR+1)

Definition at line 5 of file time.h.

DAYSPERYEAR

#define DAYSPERYEAR   365

Definition at line 4 of file time.h.

DIFFDAYS

#define DIFFDAYS   (3 * DAYSPER100YEARS + 17 * DAYSPER4YEARS + 1 * DAYSPERYEAR)

Definition at line 2 of file time.h.

DIFFTIME

#define DIFFTIME   0x19db1ded53e8000ULL

Definition at line 1 of file time.h.

LEAPDAY

#define LEAPDAY   59

Definition at line 10 of file time.h.

SECONDSPERDAY

#define SECONDSPERDAY   (24*60*60)

Definition at line 8 of file time.h.

SECONDSPERHOUR

#define SECONDSPERHOUR   (60*60)

Definition at line 9 of file time.h.

Function Documentation

FileTimeToUnixTime()

static __inline __time64_t FileTimeToUnixTime ( const FILETIME *  FileTime, USHORT *  millitm  )

static

Definition at line 14 of file time.h.

{
    ULARGE_INTEGER ULargeInt;
    __time64_t time;
 
    ULargeInt.LowPart = FileTime->dwLowDateTime;
    ULargeInt.HighPart = FileTime->dwHighDateTime;
    ULargeInt.QuadPart -= DIFFTIME;
 
    time = ULargeInt.QuadPart / 10000000;
    if (millitm)
        *millitm = (USHORT)((ULargeInt.QuadPart % 10000000) / 10000);
 
    return time;
}

Referenced by _ftime_s(), _tfindfirst(), _tfindnext(), _time(), and clock().

leapdays_passed()

static __inline long leapdays_passed ( long  days )

static

Definition at line 43 of file time.h.

{
    return leapyears_passed(days + DAYSPERYEAR - LEAPDAY + 1);
}

Referenced by _gmtime_worker(), and years_passed().

leapyears_passed()

static __inline long leapyears_passed ( long  days )

static

Definition at line 31 of file time.h.

{
    long quadcenturies, centuries, quadyears;
    quadcenturies = days / DAYSPER400YEARS;
    days -= quadcenturies;
    centuries = days / DAYSPER100YEARS;
    days += centuries;
    quadyears = days / DAYSPER4YEARS;
    return quadyears - centuries + quadcenturies;
}

Referenced by _gmtime_worker(), and leapdays_passed().

years_passed()

static __inline long years_passed ( long  days )

static

Definition at line 49 of file time.h.

{
    return (days - leapdays_passed(days)) / 365;
}

Variable Documentation

dst_begin

long dst_begin

extern

Definition at line 16 of file timezone.c.

Referenced by _gmtime_worker(), and _tzset().

dst_end

long dst_end

extern

Definition at line 17 of file timezone.c.

Referenced by _gmtime_worker(), _tzset(), HLPFILE_Uncompress3(), lznt1_decompress(), lznt1_decompress_chunk(), and RtlpCompressBufferLZNT1().