Time conversions

Functions
DLL_EXPORT timespec_t	vlbi_time_mktimespec (int year, int month, int dom, int hour, int minute, int second, long nanosecond)
	Obtain a timespec struct containing the date and time specified. More...
DLL_EXPORT double	vlbi_time_timespec_to_J2000time (timespec_t tp)
	Convert a timespec into J2000 time. More...
DLL_EXPORT double	vlbi_time_J2000time_to_lst (double secs_since_J2000, double Long)
	Obtain the local sidereal time at an arbitrary moment and location. More...
DLL_EXPORT timespec_t	vlbi_time_string_to_timespec (const char *time)
	Obtain a timespec struct containing the date and time specified by a time string. More...
DLL_EXPORT timespec_t	vlbi_time_J2000time_to_timespec (double secs_since_J2000)
	Obtain a timespec struct containing the date and time specified by a J2000 time. More...

Detailed Description

Function Documentation

vlbi_time_J2000time_to_lst()

DLL_EXPORT double vlbi_time_J2000time_to_lst	(	double	secs_since_J2000,
		double	Long
	)

Parameters

secs_since_J2000	seconds since J2000.
Long	the longitude.

vlbi_time_J2000time_to_timespec()

DLL_EXPORT timespec_t vlbi_time_J2000time_to_timespec

(

double

secs_since_J2000

)

Parameters

secs_since_J2000

seconds since J2000.

Returns

the timespec struct containing the date and time specified.

vlbi_time_mktimespec()

DLL_EXPORT timespec_t vlbi_time_mktimespec	(	int	year,
		int	month,
		int	dom,
		int	hour,
		int	minute,
		int	second,
		long	nanosecond
	)

Parameters

year	the year.
month	the month.
dom	the day of the month.
hour	the hour.
minute	minutes.
second	seconds.
nanosecond	nanoseconds.

Returns

the timespec struct containing the date and time specified.

vlbi_time_string_to_timespec()

DLL_EXPORT timespec_t vlbi_time_string_to_timespec

(

const char *

time

)

Parameters

time	String containing the time to be converted

Returns

the timespec struct containing the date and time specified.

vlbi_time_timespec_to_J2000time()

DLL_EXPORT double vlbi_time_timespec_to_J2000time

(

timespec_t

tp

)

Parameters

tp	the timespec containing date and time informations.

Returns

seconds since J2000.