GPSTimeUTC Class Reference

Public Member Functions
	GPSTimeUTC ()
	Constructs GPSTimeUTC with week and seconds equal to zero.
	GPSTimeUTC (const GPSTime &gpsTime, double leapSeconds)
	Constructs GPSTimeUTC at GPSTime with leap seconds. More...
	GPSTimeUTC (int32_t week, double seconds)
	Constructs GPSTimeUTC at with week and seconds of week value. More...
	GPSTimeUTC (double dateTime)
	Constructs GPSTimeUTC from Delphi TDateTime value which is defined as double type. More...
	GPSTimeUTC (const UTCTime &time)
	Constructs GPSTimeUTC with the utc time represented by UTCTime object. More...
int32_t	getWeek () const
	Week since 06-Jan-1980 UTC according to UTC. More...
double	getSeconds () const
	Seconds of GPS week according to UTC. More...
double	getDateTimeValue () const
	UTC days since 30-Dec-1899 UTC, fractional part represents ratio of day. More...
int64_t	getUnixTimeValue () const
	Integer number of seconds since start of Unix time on 01-Jan-1970 UTC. More...

Static Public Member Functions
static double	RelativeSecondsBetween (const GPSTimeUTC &start, const GPSTimeUTC &end)
	Calculates relative seconds between two GPS times UTC. More...
static GPSTimeUTC	IncrementSeconds (const GPSTimeUTC &time, double secondsIncrement)
	Returns a GPSTimeUTC incremented by seconds. More...

Constructor & Destructor Documentation

GPSTimeUTC() [1/4]

GPSTimeUTC::GPSTimeUTC	(	const GPSTime &	gpsTime,
		double	leapSeconds
	)

Constructs GPSTimeUTC at GPSTime with leap seconds.

Seconds can be negative or have an absolute value greater than number of seconds in week. The internal values are going to be corrected so that seconds are positive and less than seconds in week. On 29 July 2019 UTC time was 18 seconds behind GPS time. To properly construct GPSTimeUTC -18 had to be passed as leap second value.

Parameters

gpsTime	value
leapSeconds	difference between GPS time UTC and GPS time

GPSTimeUTC() [2/4]

GPSTimeUTC::GPSTimeUTC	(	int32_t	week,
		double	seconds
	)

Constructs GPSTimeUTC at with week and seconds of week value.

Seconds can be negative or have an absolute value greater than number of seconds in week. The internal values are going to be corrected so that seconds are positive and less than seconds in week.

Parameters

week	value of weeks since 06-Jan-1980 UTC
seconds	value of seconds from week

GPSTimeUTC() [3/4]

GPSTimeUTC::GPSTimeUTC ( double  dateTime )

explicit

Constructs GPSTimeUTC from Delphi TDateTime value which is defined as double type.

It is equal to number of days since 30-Dec-1899 UTC. Fractional part is defined as ratio of day.

Parameters

dateTime

value of days since 30-Dec-1899 UTC.

GPSTimeUTC() [4/4]

GPSTimeUTC::GPSTimeUTC ( const UTCTime &  time )

explicit

Constructs GPSTimeUTC with the utc time represented by UTCTime object.

Parameters

time	UTCTime object.

Member Function Documentation

getDateTimeValue()

double GPSTimeUTC::getDateTimeValue

(

)

const

UTC days since 30-Dec-1899 UTC, fractional part represents ratio of day.

Returns

number of days

getSeconds()

double GPSTimeUTC::getSeconds

(

)

const

Seconds of GPS week according to UTC.

Returns

seconds of week

getUnixTimeValue()

int64_t GPSTimeUTC::getUnixTimeValue

(

)

const

Integer number of seconds since start of Unix time on 01-Jan-1970 UTC.

Returns

integer number of UTC seconds

getWeek()

int32_t GPSTimeUTC::getWeek

(

)

const

Week since 06-Jan-1980 UTC according to UTC.

Returns

week since 06-Jan-1980 UTC

IncrementSeconds()

static GPSTimeUTC GPSTimeUTC::IncrementSeconds ( const GPSTimeUTC &  time, double  secondsIncrement  )

static

Returns a GPSTimeUTC incremented by seconds.

Parameters

time	GPSTimeUTC value
secondsIncrement	double seconds incremented to time

Returns

GPSTimeUTC equal to passed time incremented by secondsIncrement

RelativeSecondsBetween()

static double GPSTimeUTC::RelativeSecondsBetween ( const GPSTimeUTC &  start, const GPSTimeUTC &  end  )

static

Calculates relative seconds between two GPS times UTC.

Parameters

start	GPSTimeUTC value
end	GPSTimeUTC value

Returns

relative seconds between two GPS times UTC

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The documentation for this class was generated from the following file:

• C:/CProjects/Libs/CommonLib/include/commonlib/synchronization/gps_time.h