邏輯函式

This category contains the Logical functions.

Handling non-logical arguments in logical functions

• Zero (0) is equivalent to FALSE and all other numbers are equivalent to TRUE.

• Empty cells and text in cells are ignored.

• A #VALUE error is raised if all arguments are ignored.

• A #VALUE error is raised if one argument is direct text (not text in a cell).

• Errors as argument lead to an error.

Insert - Function - Category Logical

ISNA

Syntax

ISNA(Value)

value 是要檢查的數值或表示式。

Example

=ISNA(D3) 傳回結果為 FALSE。

ISERROR

Returns the value if the cell does not contain an error value, or the alternative value if it does.

This function is available since LibreOffice 4.0.

Syntax

IFERROR(Value; Alternate_value)

Value is the value or expression to be returned if it is not equal or results in an error.

Alternate_value is the value or expression to be returned if the expression or value of Value is equal or results in an error.

Example

=ISERROR(C8) (其中儲存格 C8 包含 =1/0) 傳回 TRUE，因為 1/0 是錯誤。

=ISERROR(C8) (其中儲存格 C8 包含 =1/0) 傳回 TRUE，因為 1/0 是錯誤。

IFS

IFS is a multiple IF-function.

SWITCH

SWITCH compares expression with value1 to valuen and returns the result belonging to the first value that equals expression. If there is no match and default_result is given, that will be returned.

AND

Syntax

AND(Logical 1 [; Logical 2 [; … [; Logical 255]]])

Logical 1, Logical 2, … , Logical 255 are boolean values, references to cells or to cell ranges of logical values.

This function ignores any text or empty cell within a data range. If you suspect wrong results from this function, look for text in the data ranges. To highlight text contents in a data range, use the value highlighting feature.

Example

=AND(12<13;14>12;7<6) 傳回 FALSE。

=AND(FALSE();TRUE()) returns FALSE.

FALSE

FALSE()

Example

=FALSE() 傳回 FALSE。

=NOT(FALSE()) 傳回 TRUE。

IF

Syntax

IF(Test [; [ThenValue] [; [OtherwiseValue]]])

Test 是任意值或可為 TRUE 或 FALSE 的表示式。

In the LibreOffice Calc functions, parameters marked as "optional" can be left out only when no parameter follows. For example, in a function with four parameters, where the last two parameters are marked as "optional", you can leave out parameter 4 or parameters 3 and 4, but you cannot leave out parameter 3 alone.

Example

=IF(A1>5;100;"too small") If the value in A1 is greater than 5, the value 100 is returned; otherwise, the text too small is returned.

=IF(A1>5;;"too small") If the value in A1 is greater than 5, the value 0 is returned because empty parameters are considered to be 0; otherwise, the text too small is returned.

=IF(A1>5;100;) If the value in A1 is less than 5, the value 0 is returned because the empty OtherwiseValue is interpreted as 0; otherwise 100 is returned.

NOT

Syntax

NOT(LogicalValue)

LogicalValue 是要反轉的值。

Example

=NOT(A)。若 A=TRUE，則 NOT(A) 將評估 FALSE。

OR

Syntax

OR(Logical 1 [; Logical 2 [; … [; Logical 255]]])

Logical 1, Logical 2, … , Logical 255 are boolean values, references to cells or to cell ranges of logical values.

This function ignores any text or empty cell within a data range. If you suspect wrong results from this function, look for text in the data ranges. To highlight text contents in a data range, use the value highlighting feature.

Example

=OR(12<11;13>22;45=45) 傳回 TRUE。

=OR(FALSE();TRUE()) returns TRUE.

TRUE

TRUE()

Example

=AND(A;B) 傳回 FALSE。

=OR(A;B) 傳回 TRUE。

=NOT(AND(A;B)) 傳回 TRUE。

XOR

Returns true if an odd number of arguments evaluates to TRUE.

This function is available since LibreOffice 4.0.

Syntax

XOR(Logical 1 [; Logical 2 [; … [; Logical 255]]])

Logical 1, Logical 2, … , Logical 255 are boolean values, references to cells or to cell ranges of logical values.

Example

=XOR(TRUE();TRUE()) returns FALSE

=XOR(TRUE();TRUE();TRUE()) returns TRUE

=XOR(FALSE();TRUE()) returns TRUE