tempoch::JulianDate Class Reference

Julian Date wrapper (value type). More...

#include <tempoch/time.hpp>

Public Member Functions
constexpr	JulianDate (double v)
constexpr double	value () const
	Raw value.
double	to_mjd () const
	Convert to MJD.
UTC	to_utc () const
	Convert to UTC.
double	operator- (const JulianDate &other) const
	Difference in days (this – other).
JulianDate	operator+ (double days) const
	Add days.
double	julian_centuries () const
	Julian centuries since J2000.
bool	operator== (const JulianDate &o) const
bool	operator!= (const JulianDate &o) const
bool	operator< (const JulianDate &o) const
bool	operator<= (const JulianDate &o) const
bool	operator> (const JulianDate &o) const
bool	operator>= (const JulianDate &o) const

Static Public Member Functions
static JulianDate	J2000 ()
	J2000.0 epoch (2451545.0).
static JulianDate	from_utc (const UTC &utc)
	Create from a UTC date-time.

Detailed Description

Julian Date wrapper (value type).

Wraps a raw double Julian Date value and provides conversions to/from UTC, MJD, and arithmetic operations.

auto jd = tempoch::JulianDate::J2000();           // 2451545.0
auto utc = jd.to_utc();
auto jd2 = jd + 365.25;                           // add one Julian year
double centuries = jd.julian_centuries();           // since J2000

Definition at line 89 of file time.hpp.

Constructor & Destructor Documentation

JulianDate()

constexpr tempoch::JulianDate::JulianDate ( double  v )

inlineexplicitconstexpr

Definition at line 93 of file time.hpp.

Member Function Documentation

from_utc()

static JulianDate tempoch::JulianDate::from_utc ( const UTC &  utc )

inlinestatic

Create from a UTC date-time.

Definition at line 99 of file time.hpp.

References tempoch::check_status(), and tempoch::UTC::to_c().

J2000()

static JulianDate tempoch::JulianDate::J2000 ( )

inlinestatic

J2000.0 epoch (2451545.0).

Definition at line 96 of file time.hpp.

julian_centuries()

double tempoch::JulianDate::julian_centuries ( ) const

inline

Julian centuries since J2000.

Definition at line 130 of file time.hpp.

operator!=()

bool tempoch::JulianDate::operator!= ( const JulianDate &  o ) const

inline

Definition at line 135 of file time.hpp.

operator+()

JulianDate tempoch::JulianDate::operator+ ( double  days ) const

inline

Add days.

Definition at line 125 of file time.hpp.

operator-()

double tempoch::JulianDate::operator- ( const JulianDate &  other ) const

inline

Difference in days (this – other).

Definition at line 120 of file time.hpp.

operator<()

bool tempoch::JulianDate::operator< ( const JulianDate &  o ) const

inline

Definition at line 136 of file time.hpp.

operator<=()

bool tempoch::JulianDate::operator<= ( const JulianDate &  o ) const

inline

Definition at line 137 of file time.hpp.

operator==()

bool tempoch::JulianDate::operator== ( const JulianDate &  o ) const

inline

Definition at line 134 of file time.hpp.

operator>()

bool tempoch::JulianDate::operator> ( const JulianDate &  o ) const

inline

Definition at line 138 of file time.hpp.

operator>=()

bool tempoch::JulianDate::operator>= ( const JulianDate &  o ) const

inline

Definition at line 139 of file time.hpp.

to_mjd()

double tempoch::JulianDate::to_mjd ( ) const

inline

Convert to MJD.

Definition at line 110 of file time.hpp.

to_utc()

UTC tempoch::JulianDate::to_utc ( ) const

inline

Convert to UTC.

Definition at line 113 of file time.hpp.

References tempoch::check_status(), and tempoch::UTC::from_c().

value()

constexpr double tempoch::JulianDate::value ( ) const

inlineconstexpr

Raw value.

Definition at line 107 of file time.hpp.

Referenced by tempoch::MJD::from_jd().

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

• time.hpp