simple-squiggle/node_modules/mathjs/docs/reference/functions/not.md

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<!-- Note: This file is automatically generated from source code comments. Changes made in this file will be overridden. -->
# Function not
Logical `not`. Flips boolean value of a given parameter.
For matrices, the function is evaluated element wise.
## Syntax
```js
math.not(x)
```
### Parameters
Parameter | Type | Description
--------- | ---- | -----------
`x` | number &#124; BigNumber &#124; Complex &#124; Unit &#124; Array &#124; Matrix | First value to check
### Returns
Type | Description
---- | -----------
boolean &#124; Array &#124; Matrix | Returns true when input is a zero or empty value.
### Throws
Type | Description
---- | -----------
## Examples
```js
math.not(2) // returns false
math.not(0) // returns true
math.not(true) // returns false
a = [2, -7, 0]
math.not(a) // returns [false, false, true]
```
## See also
[and](and.md),
[or](or.md),
[xor](xor.md)