Package org.apache.poi.ss.formula.functions

Class Days

java.lang.Object

org.apache.poi.ss.formula.functions.Days

All Implemented Interfaces:

FreeRefFunction

public class Days
extends Object
implements FreeRefFunction

Calculates the number of days between two dates based on a real year, which is used in some accounting calculations.

DAYS(end_date,start_date)

• Start_date, end_date (required):
  The two dates between which you want to know the number of days.
  If start_date occurs after end_date, the DAYS function returns a negative number.

See Also:

• DAYS function - Microsoft Office

Field Summary

Fields

Modifier and Type	Field	Description
static final Days	instance

Method Summary

Modifier and Type	Method	Description
ValueEval	evaluate(ValueEval[] args, OperationEvaluationContext ec)

Methods inherited from class java.lang.Object

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

Field Details

instance

public static final Days instance

Method Details

evaluate

public ValueEval evaluate(ValueEval[] args,
 OperationEvaluationContext ec)

Specified by:

evaluate in interface FreeRefFunction

Parameters:

args - the pre-evaluated arguments for this function. args is never null, nor are any of its elements.

ec - primarily used to identify the source cell containing the formula being evaluated. may also be used to dynamically create reference evals.

Returns:

never null. Possibly an instance of ErrorEval in the case of a specified Excel error (Exceptions are never thrown to represent Excel errors).