subr_fattime.c File Reference

#include <sys/param.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/clock.h>

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Macros
#define	DAY   (24 * 60 * 60) /* Length of day in seconds */
#define	YEAR   365 /* Length of normal year */
#define	LYC   (4 * YEAR + 1) /* Length of 4 year leap-year cycle */
#define	T1980   (10 * 365 + 2) /* Days from 1970 to 1980 */
#define	JAN   31
#define	FEB   (JAN + 28)
#define	MAR   (FEB + 31)
#define	APR   (MAR + 30)
#define	MAY   (APR + 31)
#define	JUN   (MAY + 30)
#define	JUL   (JUN + 31)
#define	AUG   (JUL + 31)
#define	SEP   (AUG + 30)
#define	OCT   (SEP + 31)
#define	NOV   (OCT + 30)
#define	DEC   (NOV + 31)
#define	ENC(y, m)   (((y) << 9) | ((m) << 5))
#define	DCOD(m, y, l)   ((m) + YEAR * (y) + (l))

Functions
void	timespec2fattime (struct timespec *tsp, int utc, uint16_t *ddp, uint16_t *dtp, uint8_t *dhp)
void	fattime2timespec (unsigned dd, unsigned dt, unsigned dh, int utc, struct timespec *tsp)

Variables
struct {
uint16_t   days
uint16_t   coded
}	mtab [48]
static const uint16_t	daytab [64]

Macro Definition Documentation

#define APR   (MAR + 30)

Definition at line 87 of file subr_fattime.c.

#define AUG   (JUL + 31)

Definition at line 91 of file subr_fattime.c.

#define DAY   (24 * 60 * 60) /* Length of day in seconds */

Definition at line 78 of file subr_fattime.c.

Referenced by fattime2timespec(), and timespec2fattime().

#define DCOD	(		m,
			y,
			l
	)		((m) + YEAR * (y) + (l))

Definition at line 197 of file subr_fattime.c.

#define DEC   (NOV + 31)

Definition at line 95 of file subr_fattime.c.

#define ENC	(		y,
			m
	)		(((y) << 9) | ((m) << 5))

Definition at line 99 of file subr_fattime.c.

#define FEB   (JAN + 28)

Definition at line 85 of file subr_fattime.c.

Referenced by fattime2timespec(), and timespec2fattime().

#define JAN   31

Definition at line 84 of file subr_fattime.c.

#define JUL   (JUN + 31)

Definition at line 90 of file subr_fattime.c.

#define JUN   (MAY + 30)

Definition at line 89 of file subr_fattime.c.

#define LYC   (4 * YEAR + 1) /* Length of 4 year leap-year cycle */

Definition at line 80 of file subr_fattime.c.

Referenced by fattime2timespec(), and timespec2fattime().

#define MAR   (FEB + 31)

Definition at line 86 of file subr_fattime.c.

#define MAY   (APR + 31)

Definition at line 88 of file subr_fattime.c.

#define NOV   (OCT + 30)

Definition at line 94 of file subr_fattime.c.

#define OCT   (SEP + 31)

Definition at line 93 of file subr_fattime.c.

#define SEP   (AUG + 30)

Definition at line 92 of file subr_fattime.c.

#define T1980   (10 * 365 + 2) /* Days from 1970 to 1980 */

Definition at line 81 of file subr_fattime.c.

Referenced by fattime2timespec(), and timespec2fattime().

#define YEAR   365 /* Length of normal year */

Definition at line 79 of file subr_fattime.c.

Function Documentation

void fattime2timespec	(	unsigned	dd,
		unsigned	dt,
		unsigned	dh,
		int	utc,
		struct timespec *	tsp
	)

Definition at line 218 of file subr_fattime.c.

References DAY, daytab, FEB, LYC, T1980, and utc_offset().

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void timespec2fattime	(	struct timespec *	tsp,
		int	utc,
		uint16_t *	ddp,
		uint16_t *	dtp,
		uint8_t *	dhp
	)

Definition at line 138 of file subr_fattime.c.

References DAY, days, FEB, LYC, mtab, T1980, and utc_offset().

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Variable Documentation

uint16_t coded

Definition at line 103 of file subr_fattime.c.

uint16_t days

Definition at line 102 of file subr_fattime.c.

Referenced by clock_ct_to_ts(), clock_ts_to_ct(), and timespec2fattime().

const uint16_t daytab[64]

static

Initial value:

= {
        0,               DCOD(  0, 0, 0), DCOD(JAN, 0, 0), DCOD(FEB, 0, 1),
        DCOD(MAR, 0, 1), DCOD(APR, 0, 1), DCOD(MAY, 0, 1), DCOD(JUN, 0, 1),
        DCOD(JUL, 0, 1), DCOD(AUG, 0, 1), DCOD(SEP, 0, 1), DCOD(OCT, 0, 1),
        DCOD(NOV, 0, 1), DCOD(DEC, 0, 1), 0,               0,
        0,               DCOD(  0, 1, 1), DCOD(JAN, 1, 1), DCOD(FEB, 1, 1),
        DCOD(MAR, 1, 1), DCOD(APR, 1, 1), DCOD(MAY, 1, 1), DCOD(JUN, 1, 1),
        DCOD(JUL, 1, 1), DCOD(AUG, 1, 1), DCOD(SEP, 1, 1), DCOD(OCT, 1, 1),
        DCOD(NOV, 1, 1), DCOD(DEC, 1, 1), 0,               0,
        0,               DCOD(  0, 2, 1), DCOD(JAN, 2, 1), DCOD(FEB, 2, 1),
        DCOD(MAR, 2, 1), DCOD(APR, 2, 1), DCOD(MAY, 2, 1), DCOD(JUN, 2, 1),
        DCOD(JUL, 2, 1), DCOD(AUG, 2, 1), DCOD(SEP, 2, 1), DCOD(OCT, 2, 1),
        DCOD(NOV, 2, 1), DCOD(DEC, 2, 1), 0,               0,
        0,               DCOD(  0, 3, 1), DCOD(JAN, 3, 1), DCOD(FEB, 3, 1),
        DCOD(MAR, 3, 1), DCOD(APR, 3, 1), DCOD(MAY, 3, 1), DCOD(JUN, 3, 1),
        DCOD(JUL, 3, 1), DCOD(AUG, 3, 1), DCOD(SEP, 3, 1), DCOD(OCT, 3, 1),
        DCOD(NOV, 3, 1), DCOD(DEC, 3, 1), 0,               0
}

Definition at line 198 of file subr_fattime.c.

Referenced by fattime2timespec().

const { ... } mtab[48]

Referenced by timespec2fattime().