Documentation/Calc Functions/NOT
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Function name:
NOT
Category:
Logical
Summary:
Determines the logical complement or negation of a Boolean value, reversing true values to false and false values to true.
Syntax:
NOT(Logical Value)
Returns:
Returns either TRUE (1) or FALSE (0), giving the logical complement of the supplied logical value.
Arguments:
Logical Value is an expression, or a reference to a cell containing an expression, that can be evaluated to a logical value TRUE or FALSE. If Logical Value is evaluated to a number instead of a logical value, then the value 0 (zero) is treated as FALSE, while any non-zero numeric value is treated as TRUE.
- If Logical Value cannot be evaluated as a logical value, then NOT reports a #VALUE! error.
Additional details:
General information about Calc's logical functions
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Note:
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Calc uses the numbers 0 (FALSE) and 1 (TRUE) to represent logical values. For example, enter 1 in a cell that has the default general number format. Then select ▸ on the Menu bar to display the Format Cells dialog, select the Boolean Value option in the Category area of the Numbers tab, and click the button. Notice that the number 1 is now displayed as TRUE. To revert to displaying the number 1, repeat the process but select Number instead of Boolean Value.
To enter a logical value into a cell, simply type either TRUE or FALSE (case-insensitive) into the cell. Calc will recognize the logical value, display it in uppercase letters, and change the cell's format to that appropriate to Boolean values.
Calc functions that produce a logical result return a number, either 0 or 1. In the case of a formula that simply calls such a logical function and is in a cell that has the default general number format, the cell is switched to the Boolean value format and the returned value is displayed as FALSE or TRUE. For example =TRUE() returns the value 1, which is displayed as TRUE; if you then change the format to a numerical format, it is displayed as the number 1.
Calc functions that test for a logical result always evaluate the expression to be tested and check if it is equal to 0. The value 0 is taken as FALSE and any other value is taken as TRUE. For example, =NOT(0) returns TRUE and =NOT(57.89) returns FALSE.
In contrast to Calc, Microsoft Excel has a separate type for logical values - they are not numbers but are sometimes converted to numbers. Take care therefore if you need compatibility.
Examples:
| Formula | Description | Returns |
|---|---|---|
| =NOT(TRUE()) | Negate TRUE(). | FALSE |
| =NOT(D1)
where cell D1 contains the number 234.567. |
Logical complement of a non-zero numeric value. | FALSE |
| =NOT(1 > 2) | The expression evaluated is FALSE. | TRUE |
| =1*NOT(NOT(D1))
where cell D1 contains a non-zero numeric value. |
The function applied twice "flattens" numeric non-zero values (whether positive or negative) to "1". | 1 |
Related LibreOffice functions:
ODF standard:
Related (or similar) Excel functions:
NOT