timex.h File Reference

This header file provides interfaces of the Network Time Protocol (NTP) support. More...

Go to the source code of this file.

Data Structures
struct	ntptimeval
struct	timex

Macros
#define	NTP_API   4 /* NTP API version */
#define	MAXPHASE   500000000L /* max phase error (ns) */
#define	MAXFREQ   500000L /* max freq error (ns/s) */
#define	MINSEC   256 /* min FLL update interval (s) */
#define	MAXSEC   2048 /* max PLL update interval (s) */
#define	NANOSECOND   1000000000L /* nanoseconds in one second */
#define	SCALE_PPM   (65536 / 1000) /* crude ns/s to scaled PPM */
#define	MAXTC   10 /* max time constant */
#define	MOD_OFFSET   0x0001 /* set time offset */
#define	MOD_FREQUENCY   0x0002 /* set frequency offset */
#define	MOD_MAXERROR   0x0004 /* set maximum time error */
#define	MOD_ESTERROR   0x0008 /* set estimated time error */
#define	MOD_STATUS   0x0010 /* set clock status bits */
#define	MOD_TIMECONST   0x0020 /* set PLL time constant */
#define	MOD_PPSMAX   0x0040 /* set PPS maximum averaging time */
#define	MOD_TAI   0x0080 /* set TAI offset */
#define	MOD_MICRO   0x1000 /* select microsecond resolution */
#define	MOD_NANO   0x2000 /* select nanosecond resolution */
#define	MOD_CLKB   0x4000 /* select clock B */
#define	MOD_CLKA   0x8000 /* select clock A */
#define	STA_PLL   0x0001 /* enable PLL updates (rw) */
#define	STA_PPSFREQ   0x0002 /* enable PPS freq discipline (rw) */
#define	STA_PPSTIME   0x0004 /* enable PPS time discipline (rw) */
#define	STA_FLL   0x0008 /* enable FLL mode (rw) */
#define	STA_INS   0x0010 /* insert leap (rw) */
#define	STA_DEL   0x0020 /* delete leap (rw) */
#define	STA_UNSYNC   0x0040 /* clock unsynchronized (rw) */
#define	STA_FREQHOLD   0x0080 /* hold frequency (rw) */
#define	STA_PPSSIGNAL   0x0100 /* PPS signal present (ro) */
#define	STA_PPSJITTER   0x0200 /* PPS signal jitter exceeded (ro) */
#define	STA_PPSWANDER   0x0400 /* PPS signal wander exceeded (ro) */
#define	STA_PPSERROR   0x0800 /* PPS signal calibration error (ro) */
#define	STA_CLOCKERR   0x1000 /* clock hardware fault (ro) */
#define	STA_NANO   0x2000 /* resolution (0 = us, 1 = ns) (ro) */
#define	STA_MODE   0x4000 /* mode (0 = PLL, 1 = FLL) (ro) */
#define	STA_CLK   0x8000 /* clock source (0 = A, 1 = B) (ro) */
#define	STA_RONLY
#define	TIME_OK   0 /* no leap second warning */
#define	TIME_INS   1 /* insert leap second warning */
#define	TIME_DEL   2 /* delete leap second warning */
#define	TIME_OOP   3 /* leap second in progress */
#define	TIME_WAIT   4 /* leap second has occurred */
#define	TIME_ERROR   5 /* error (see status word) */

Detailed Description

This header file provides interfaces of the Network Time Protocol (NTP) support.

Macro Definition Documentation

STA_RONLY

#define STA_RONLY

Value:

    (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \
    STA_PPSERROR | STA_CLOCKERR | STA_NANO | STA_MODE | STA_CLK)