jodd.julianday

Class DayValue

java.lang.Object

jodd.julianday.DayValue

public class DayValue
extends java.lang.Object

Represents a high-precision day value that consists of integer part and fraction part. Using just double for day value is not enough, as it may lead to rounding errors due to number of significant digits in double. Splitting day value into integer and fraction parts helps to avoid such errors for the precision we want to achieve: milliseconds precision.

Final day value is calculated as: day + time. DayValue is only a tuple holding these two values. It has no domain meaning by itself. Therefore, it can hold a Julian day value, Modified Julian day value, or any other day value. It also does not recalculate time value to be in the range [0, 1).

Constructor Summary

Constructors

Constructor and Description
DayValue(int day, double time) Creates a new day value.

Method Summary

Modifier and Type	Method and Description
int	day() Returns integer part of the day.
boolean	equals(java.lang.Object o)
int	hashCode()
double	time() Returns the fraction part of day.
java.math.BigDecimal	toBigDecimal() Converts day value to BigDecimal.
double	toDouble() Converts day value to less precise double value.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DayValue

public DayValue(int day,
                double time)

Creates a new day value.

Parameters:

day - integer part of the day

time - fraction part of the day

Method Detail

day

public int day()

Returns integer part of the day.

time

public double time()

Returns the fraction part of day.

toDouble

public double toDouble()

Converts day value to less precise double value. Warning: double value is not precise enough for high-precision calculations.

toBigDecimal

public java.math.BigDecimal toBigDecimal()

Converts day value to BigDecimal.

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object