目次

# LibreOffice Calc で使える演算子

LibreOffice Calc では、次の演算子が使用できます:

## 算術演算子

この演算子は、計算結果として数値を返します。入力は常に半角で行います。

演算子 | 名前 | 例
--- | --- | ---
+ | 加算 | 1+1
- | 減算 | 2-1
- | 負の数 | -5
* | 乗算 | 2*2
/ | 除算 | 9/3
% | パーセント | 15%
^ | べき算 | 3^2

Prefix "-" (negation) has a higher precedence than "^" (exponentiation). For example -3^2 equals 9, which is the square of a negative number.

## 比較演算子

この演算子は、計算結果として TRUE または FALSE を返します。入力は常に半角で行います。

演算子 | 名前 | 例
--- | --- | ---
= | 等しい | A1=B1
> | 左辺が右辺よりも大きい | A1>B1
< | 左辺が右辺よりも小さい | A1<B1
>= | 左辺が右辺以上 | A1>=B1
<= | 左辺が右辺以下 | A1<=B1
<> | 左辺と右辺が等しくない | A1<>B1

## 文字列演算子

この演算子は、文字列どうしを結合します。入力は常に半角で行います。

演算子 | 名前 | 例
--- | --- | ---
& | text concatenation | "Sun" & "day" は Sunday を返します。

## 参照演算子

これらの演算子は、ゼロ、または 1 つ以上のセルのセル範囲を返します。

範囲が優先順位がもっとも高く、次が積集合で、最後が和集合です。

演算子 | 名前 | 例
--- | --- | ---
: | 範囲 | A1:C108, A:D or 3:13
! | 共通部分 | SUM(A1:B6!B5:C12) この場合、セル B5 とセル B6 が共通部分にあり、合計が計算されます。
~ | 連結または結合 | 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) | コメント
--- | --- | ---
左へ | : | Range.
左へ | ! | Reference intersection (A1:C4!B1:B5 is B1:B4).
左へ | ~ | Reference union.
右へ | +,- | Prefix unary operators. For example, -5 or -A1. Note that these have a different precedence than add and subtract.
左へ | % | Postfix unary operator % (divide by 100). Note that this is legal with expressions, for example, B1%.
左へ | ^ | Power (2^3 is 8).
左へ | *,/ | Multiply, divide.
左へ | +,- | Binary operations add, subtract. Note that unary (prefix) + and - have a different precedence.
左へ | & | Binary operation string concatenation. Note that "&" shall be escaped when included in an XML document.
左へ | =, <>, <, <=, >, >= | 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.

関連項目

OpenDocument v1.3 part 4, Formula Operators