hirondelle.formula.function.builtin
Class DayFromJD

Object
  hirondelle.formula.function.builtin.DayFromJD

All Implemented Interfaces:

Function

public final class DayFromJD
extends Object
implements Function

dayfromjd(jd): convert a Julian Date into a calendar date. Accepts fractional days.

Constructor Summary

DayFromJD()

Method Summary

Decimal

calculate(Decimal... aArgs) The single argument is a Julian Date.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DayFromJD

public DayFromJD()

Method Detail

calculate

public Decimal calculate(Decimal... aArgs)

The single argument is a Julian Date. For example, this call returns a day in 1957 (with Decimals represented by their values, for convenience):

dayfromjd(2436116.31) => 19571004.81

The return value is an encoding of a date into a Decimal. In the above example, the returned date is

1957-01-04.81 (January 4, 1957 19h 26m)

where the decimal portion reflects a fraction of a day.

Specified by:

calculate in interface Function

Parameters:

aArgs - 0 or more arguments to the function.