timelib.h File Reference

timelib include file A library providing functions for handling various types of time. More...

#include "support/configCosmos.h"
#include "support/elapsedtime.h"
#include "math/mathlib.h"
#include <cmath>
#include <time.h>
#include <errno.h>
#include <stdio.h>
#include <ctime>
#include <ratio>

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Classes
struct	timestruc
struct	calstruc
class	DateTime

Macros
#define	MJD_UNIX_OFFSET   40587.
#define	JD_MJD_OFFSET   2400000.5
#define	MJD2JD(mjd)   (double)((mjd) + JD_MJD_OFFSET)
#define	JD2MJD(jd)   (double)((jd) - JD_MJD_OFFSET)
#define	DAY_TO_SECONDS   86400.
#define	SECONDS_TO_DAYS(x)   ((double)(x) / DAY_TO_SECONDS)
#define	DAYS_TO_SECONDS(x)   ((double)(x) * DAY_TO_SECONDS)
#define	TIME_SECS_TO_DAYS(x)   ((double)(x) / DAY_TO_SECONDS)
#define	TIME_DAYS_TO_SECS(x)   ((double)(x) * DAY_TO_SECONDS)
#define	TIME_SECS_SINCE_MJD(x)   ( ( (currentmjd(0.)-(x)) ) * DAY_TO_SECONDS )
#define	TIME_UNIXs_TO_MJD(unixSecs)   ( ( (unixSecs) / DAY_TO_SECONDS ) + MJD_UNIX_OFFSET )
#define	TIME_MJD_TO_UNIXs(mjd)   (((mjd) - MJD_UNIX_OFFSET) * DAY_TO_SECONDS)
#define	TIME_UNIX_TV_TO_DOUBLE_SECS(x)   ( ((double)(x.tv_sec)) + ((double)(x.tv_usec) / 1000000. ) )
#define	UPTIME   (DAY_TO_SECONDS*(currentmjd(0.)-mjd_start_time))

Functions
double	currentmjd (double offset)
	Current UTC in Modified Julian Days. More...
double	currentmjd ()
unsigned long int	get_unix_time ()
string	get_local_time ()
double	cal2mjd (calstruc date)
	Calendar representation to Modified Julian Day - structure. More...
double	cal2mjd (double year)
	Calendar representation YYYY.ffff to Modified Julian Day - overloaded. More...
double	cal2mjd (int32_t year, double dayOfYear)
	Calendar representation YYYY,DDD.ffff to Modified Julian Day - overloaded. More...
double	cal2mjd (int32_t year, int32_t month, double day)
	Calendar representation to Modified Julian Day - shortened. More...
double	cal2mjd (int32_t year, int32_t month, int32_t day, int32_t hour, int32_t minute, int32_t second, int32_t nsecond)
	Calendar representation to Modified Julian Day - full. More...
double	gregorianToModJulianDate (int32_t year, int32_t month, int32_t day, int32_t hour, int32_t minute, double second)
struct timeval	utc2unix (double utc)
	UTC to Unix time. More...
double	utc2unixseconds (double utc)
	UTC to Unix time. More...
double	utc2epsilon (double mjd)
	Nutation Epsilon value. More...
double	utc2depsilon (double mjd)
	Nutation Delta Epsilon value. More...
double	utc2dpsi (double mjd)
	Nutation Delta Psi value. More...
double	utc2L (double mjd)
	Nutation L value. More...
double	utc2Lp (double mjd)
	Nutation L prime value. More...
double	utc2F (double mjd)
	Nutation F value. More...
double	utc2D (double mjd)
	Nutation D value. More...
double	utc2omega (double mjd)
	Nutation omega value. More...
double	utc2zeta (double utc)
	Precession zeta value. More...
double	utc2z (double utc)
	Precession z value. More...
double	utc2era (double mjd)
	Earth Rotation Angle. More...
double	utc2tt (double mjd)
	Convert UTC to TT. More...
double	utc2gps (double utc)
	Convert UTC to GPS. More...
double	utc2ut1 (double mjd)
	Convert UTC to UT1. More...
double	utc2dut1 (double mjd)
	Calculate DUT1. More...
double	utc2tdb (double mjd)
	Convert UTC to TDB. More...
double	utc2gmst1982 (double mjd)
	UTC (Modified Julian Day) to GMST. More...
double	utc2gmst2000 (double utc)
double	utc2gast (double mjd)
	UTC to GAST. More...
rvector	utc2nuts (double mjd)
	Nutation values. More...
double	utc2theta (double utc)
	Precession theta value. More...
double	utc2jcentt (double mjd)
	TT Julian Century. More...
double	utc2jcenut1 (double mjd)
	UT1 Julian Century. More...
string	utc2unixdate (double utc)
	Time for setting unix date. More...
string	utc2iso8601 (double utc)
	ISO 8601 version of time. More...
double	iso86012utc (string date)
double	gps2utc (double gps)
	Convert GPS to UTC. More...
void	gps2week (double gps, uint32_t &week, double &seconds)
	GPS Weeks and Seconds from GPS time. More...
double	week2gps (uint32_t week, double seconds)
	GPS Time from GPS Week and Seconds. More...
double	mjd2year (double mjd)
	Year from MJD. More...
double	mjd2doy (double mjd)
	Day of Year from MJD. More...
calstruc	mjd2cal (double mjd)
	MJD to Calendar. More...
int32_t	mjd2ymd (double mjd, int32_t &year, int32_t &month, double &day)
	MJD to Year, Month, and Decimal Day (overloaded) More...
int32_t	mjd2ymd (double mjd, int32_t &year, int32_t &month, double &day, double &doy)
	MJD to Year, Month, Decimal Day, and Julian Day (overloaded) More...
string	mjdToGregorian (double mjd)
int32_t	mjdToGregorian (double mjd, int32_t *year, int32_t *month, int32_t *day, int32_t *hour, int32_t *minute, int32_t *second)
string	mjdToGregorianFormat (double mjd)
string	mjdToGregorianDDMMMYYYY (double mjd)
string	mjdToGregorianDDMmmYYYY (double mjd)
string	mjd2iso8601 (double mjd)
double	mjd2jd (double mjd)
	Modified Julian Day to Julian Day. More...
double	jd2mjd (double jd)
	Julian Day to Modified Julian Day. More...
int32_t	mjd2tlef (double mjd, string &tle)
	Convert mjd to the TLE epoch format. More...
double	unix2utc (struct timeval unixtime)
	Unix time to UTC. More...
double	unix2utc (double unixtime)
	Unix time to UTC. More...
double	tt2utc (double mjd)
	Convert TT to UTC. More...
double	tt2tdb (double mjd)
double	julcen (double mjd)
	Julian Century. More...
cvector	polar_motion (double mjd)
	Polar motion. More...
int32_t	leap_seconds (double mjd)
	Leap Seconds. More...
double	ranrm (double angle)
int16_t	isleap (int32_t year)
	Check for Leap year. More...
int32_t	load_iers ()
	Load IERS Polar Motion, UT1-UTC, Leap Seconds. More...
string	seconds2DDHHMMSS (double elapsed_seconds)
	Convert Elapsed Time in Seconds to Human Readable Format (used for GPS simulator) More...
int32_t	timed_countdown (int32_t seconds, int32_t step, string message)
double	set_local_clock (double utc_to)

Detailed Description

timelib include file A library providing functions for handling various types of time.