Utility library for comparing and computing timestamps. More...

Detailed Description

Utility library for comparing and computing timestamps.

Definition in file timex.h.

#include <stdint.h>
#include <inttypes.h>

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Macros
#define	US_PER_SEC (1000000LU)
	The number of microseconds per second.

#define	SEC_PER_MIN (60LU)
	The number of seconds per minute.

#define	CS_PER_SEC (100LU)
	The number of centiseconds per second.

#define	MS_PER_SEC (1000LU)
	The number of milliseconds per second.

#define	US_PER_MS (1000LU)
	The number of microseconds per millisecond.

#define	US_PER_CS (10000U)
	The number of microseconds per centisecond.

#define	NS_PER_US (1000LU)
	The number of nanoseconds per microsecond.

#define	NS_PER_SEC (1000000000U)
	The number of nanoseconds per second.

#define	TIMEX_MAX_STR_LEN (20)
	The maximum length of the string representation of a timex timestamp.

Functions
timex_t	timex_add (const timex_t a, const timex_t b)
	Adds two timestamps. More...

timex_t	timex_sub (const timex_t a, const timex_t b)
	Subtracts two timestamps. More...

timex_t	timex_set (uint32_t seconds, uint32_t microseconds)
	Initializes a timex timestamp. More...

int	timex_cmp (const timex_t a, const timex_t b)
	Compares two timex timestamps. More...

static void	timex_normalize (timex_t *time)
	Corrects timex structure so that microseconds < 1000000. More...

static int	timex_isnormalized (const timex_t *time)
	Tests a timex timestamp for normalization. More...

static uint64_t	timex_uint64 (const timex_t a)
	Converts a timex timestamp to a 64 bit value. More...

static timex_t	timex_from_uint64 (const uint64_t timestamp)
	Converts a 64 bit value of microseconds to a timex timestamp. More...

const char *	timex_to_str (timex_t t, char *timestamp)
	Converts a timex timestamp to a string. More...

Data Structures