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# Operadors al LibreOffice Calc

Podeu utilitzar els operadors següents al LibreOffice Calc:

## Operadors aritmètics

Estos operadors retornen resultats numèrics.

Operador | Nom | Exemple
--- | --- | ---
+ | Suma | 1+1
- | Resta | 2-1
- | Negació | -5
* | Multiplicació | 2*2
/ | Divisió | 9/3
% | Percentatge | 15%
^ | Potenciació | 3^2

El prefix «-» (negació) té més prioritat que «^» (exponenciació). Per exemple, -3^2 és igual a 9, que és el quadrat d'un nombre negatiu.

B^X may or may not report a #NUM! error when B is negative and X is not an integer. The expression =B^X is calculated the same way as =POWER(B;X).

## Operadors comparatius

Estos operadors tornen cert o fals.

Operador | Nom | Exemple
--- | --- | ---
= | Igual | A1=B1
> | Major que | A1>B1
< | Menor que | A1<B1
>= | Major que o igual a | A1>=B1
<= | Menor que o igual a | A1<=B1
<> | Desigualtat | A1<>B1

## Operadors de text

L'operador combina textos separats en un sol text.

Operador | Nom | Exemple
--- | --- | ---
& | text concatenation | "Renta" & "vaixelles" és "Rentavaixelles"

## Operadors de referència

Estos operadors retornen un interval de cel·les de zero, una o més cel·les.

L'interval té la precedència més alta, tot seguit ve la intersecció, i finalment la unió.

Operador | Nom | Exemple
--- | --- | ---
: | Interval | A1:C108, A:D or 3:13
! | Intersecció | SUMA(A1:B6!B5:C12) Calcula la suma de totes les cel·les a la intersecció; en este exemple, el resultat dóna la suma de les cel·les B5 i B6.
~ | Concatenació o unió | Takes two references and returns a reference list, which is a concatenation of the left reference followed by the right reference. Double entries are referenced twice. =COUNT(A1:B2~B2:C3) counts values of A1:B2 and B2:C3. Note that the cell B2 is counted twice. =INDEX(A1:B2~C1:D2;2;1;2) selects cell C2, that is, the first cell of the second row, first column, of the second range (C1:D2) of the range list.

A reference list is not allowed inside an array expression.

## Operator precedence

Associativity and precedence of operators, from highest to lowest precedence.

Associativity | Operator(s) | Comments
--- | --- | ---
left | : | Range.
left | ! | Reference intersection (A1:C4!B1:B5 is B1:B4).
left | ~ | Reference union.
right | +,- | Prefix unary operators. For example, -5 or -A1. Note that these have a different precedence than add and subtract.
left | % | Postfix unary operator % (divide by 100). Note that this is legal with expressions, for example, B1%.
left | ^ | Power (2^3 is 8).
left | *,/ | Multiply, divide.
left | +,- | Binary operations add, subtract. Note that unary (prefix) + and - have a different precedence.
left | & | Binary operation string concatenation. Note that "&" shall be escaped when included in an XML document.
left | =, <>, <, <=, >, >= | Comparison operators equal to, not equal to, less than, less than or equal to, greater than, greater than or equal to.

Prefix "-" has a higher precedence than "^", "^" is left-associative, and reference intersection has a higher precedence than reference union.

Prefix "+" and "-" are defined to be right-associative. However, note that typical applications which implement at most the operators defined in this specification (as specified) may implement them as left-associative, because the calculated results will be identical.

Precedence can be overridden by using parentheses, so "=2+3*4" computes to 14 but "=(2+3)*4" computes 20.

Temes relacionats

OpenDocument v1.4 part 4, Formula Operators

Ens cal la vostra ajuda!