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# Add-in Functions

The following describes and lists some of the available add-in functions.

Add-in concept

You will also find a description of the LibreOffice Calc add-in interface in the Help. In addition, important functions and their parameters are described in the Help for the Shared Library LibreOffice Calc add-in DLL.

## Add-ins supplied

LibreOffice contains examples for the add-in interface of LibreOffice Calc.

Analysis Functions Part One

Analysis Functions Part Two

## DAYSINMONTH

Kalkulas la nombron da tagoj de la monato en kiu la enigita dato troviĝas.

#### Sintakso

TAGOJENMONATO(dato)

Date is any date in the respective month of the desired year. The Date parameter must be a valid date according to the locale settings of LibreOffice.

#### Ekzemplo

=DAYSINMONTH(A1) returns 29 days if A1 contains 1968-02-17, a valid date for February 1968.

#### Technical information

This function is not part of the Open Document Format for Office Applications (OpenDocument) Version 1.3. Part 4: Recalculated Formula (OpenFormula) Format standard. The name space is

ORG.OPENOFFICE.DAYSINMONTH

DAYSINMONTH wiki page.

## DAYSINYEAR

Kalkulas la nombron da tagoj de la jaro en kiu la donita dato troviĝas.

#### Sintakso

TAGOJENJARO(dato)

Date is any date in the respective year. The Date parameter must be a valid date according to the locale settings of LibreOffice.

#### Ekzemplo

=DAYSINYEAR(A1) returns 366 days if A1 contains 1968-02-29, a valid date for the year 1968.

#### Technical information

This function is not part of the Open Document Format for Office Applications (OpenDocument) Version 1.3. Part 4: Recalculated Formula (OpenFormula) Format standard. The name space is

ORG.OPENOFFICE.DAYSINYEAR

DAYSINYEAR wiki page.

## ISLEAPYEAR

Komputas ĉu jaro estas superjaro. Se jes, la funkcio liveras la valoron 1 (TRUE); se ne, ĝi liveras je 0 (FALSE).

#### Sintakso

ISLEAPYEAR(Date)

Date specifies whether a given date falls within a leap year. The Date parameter must be a valid date.

Microsoft Excel wrongly assumes year 1900 to be a leap year and considers the inexistent day of 1900-02-29 as valid in date calculations. Dates prior to 1900-03-01 are therefore different in Excel and Calc.

#### Ekzemplo

=ISLEAPYEAR(A1) returns 1, if A1 contains 1968-02-29, the valid date 29th of February 1968 in your locale setting.

You may also use =ISLEAPYEAR(DATE(1968;2;29)) or =ISLEAPYEAR("1968-02-29") giving the date string in the ISO 8601 notation.

Never use =ISLEAPYEAR(2/29/68), because this would first evaluate 2 divided by 29 divided by 68, and then calculate the ISLEAPYEAR function from this small number as a serial date number.

#### Technical information

This function is not part of the Open Document Format for Office Applications (OpenDocument) Version 1.3. Part 4: Recalculated Formula (OpenFormula) Format standard. The name space is

ORG.OPENOFFICE.ISLEAPYEAR

ISLEAPYEAR wiki page.

## MONTHS

Kalkulas la diferencon en monatoj inter du datoj.

#### Sintakso

MONTHS(StartDate; EndDate; Type)

StartDate is the first date

EndDate is the second date

Type calculates the type of difference. Possible values include 0 (interval) and 1 (in calendar months).

#### Technical information

This function is not part of the Open Document Format for Office Applications (OpenDocument) Version 1.3. Part 4: Recalculated Formula (OpenFormula) Format standard. The name space is

ORG.OPENOFFICE.MONTHS

MONTHS wiki page.

## ROT13

Ĉifras ĉenon movante la signojn laŭ 13 pozicioj en la alfabeto. Post la lasta litero la alfabeto rekomencas (rotacio). Aplikante la ĉifran funkcion denove al la rezulta kodo, vi povas malĉifri la tekston.

#### Sintakso

ROT13(teksto)

Text is the character string to be encrypted. ROT13(ROT13(Text)) decrypts the code.

#### Ekzemplo

=ROT13("Gur Qbphzrag Sbhaqngvba jnf sbhaqrq va Frcgrzore 2010.") returns the string "The Document Foundation was founded in September 2010.". Notice how spaces, digits, and full stops are unaffected by ROT13.

#### Technical information

This function is not part of the Open Document Format for Office Applications (OpenDocument) Version 1.3. Part 4: Recalculated Formula (OpenFormula) Format standard. The name space is

ORG.OPENOFFICE.ROT13

Refer to the ROT13 wiki page for more details about this function.

## WEEKS

Kalkulas la diferencon en semajnoj inter du datoj.

#### Sintakso

WEEKS(StartDate; EndDate; Type)

StartDate is the start date in the interval.

EndDate is the end date in the interval. The end date must be greater than the start date, or else an error is returned.

Type specifies the type of difference to be calculated. Possible values are 0 (time interval) or 1 (calendar weeks).

If Type = 0 the function will assume that 7 days is equivalent to one week without considering any specific day to mark the beginning of a week.

If Type = 1 the function will consider Monday to be the first day of the week. Therefore, except for the start date, each occurrence of a Monday in the interval is counted as an additional week.

This function considers Monday to be the first day of the week regardless of the current locale settings.

#### Ekzemplo

In the following examples, dates are passed as strings. However, they can also be stored in separate cells and be passed as references.

=WEEKS("01/12/2022","01/17/2022",0) returns 0 because Type was set to 0 and there are only 5 days in the interval.

=WEEKS("01/12/2022","01/19/2022",0) returns 1 because Type was set to 0 and there are 7 days in the interval.

=WEEKS("01/12/2022","01/17/2022",1) returns 1 because Type was set to 1 and the interval contains a Monday, since 01/12/2022 is a Wednesday and 01/17/2022 is a Monday.

=WEEKS("01/10/2022","01/15/2022",1) returns 0 because Type was set to 1 and the interval does not contain any Mondays, except for the start date.

#### Technical information

This function is not part of the Open Document Format for Office Applications (OpenDocument) Version 1.3. Part 4: Recalculated Formula (OpenFormula) Format standard. The name space is

ORG.OPENOFFICE.WEEKS

WEEKS wiki page.

## WEEKSINYEAR

Kalkulas la nombron da semajnoj de la jaro en kiu la dato troviĝas. Kalkulas la semajnojn jene: semajnon kiu etendas en du jaroj aldonu al la jaro en kiu pliaj tagoj troviĝas.

#### Sintakso

SEMAJNOENJARO(dato)

Date is any date in the respective year. The Date parameter must be a valid date according to the locale settings of LibreOffice.

#### Ekzemplo

WEEKSINYEAR(A1) returns 53 if A1 contains 1970-02-17, a valid date for the year 1970.

#### Technical information

This function is not part of the Open Document Format for Office Applications (OpenDocument) Version 1.3. Part 4: Recalculated Formula (OpenFormula) Format standard. The name space is

ORG.OPENOFFICE.WEEKSINYEAR

WEEKSINYEAR wiki page.

## YEARS

Kalkulas la diferencon en jaroj inter du datoj.

#### Sintakso

YEARS(StartDate; EndDate; Type)

StartDate is the first date

EndDate is the second date

Type calculates the type of difference. Possible values are 0 (interval) and 1 (in calendar years).

#### Technical information

This function is not part of the Open Document Format for Office Applications (OpenDocument) Version 1.3. Part 4: Recalculated Formula (OpenFormula) Format standard. The name space is

ORG.OPENOFFICE.YEARS

YEARS wiki page.

## Add-ins through LibreOffice API

Add-ins can also be implemented through the LibreOffice API.

Rilataj temoj

Functions by Category