### Description

Calculates the absolute value of a number.

### Syntax

`abs(x)`

### Parameters

`x`

: the number

### Returns

`x`

: if x is greater than or equal to 0.

`-x`

: if x is less than 0.

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Calculates the absolute value of a number.

`abs(x)`

`x`

: the number

`x`

: if x is greater than or equal to 0.

`-x`

: if x is less than 0.

Because of the way the abs() function is implemented, avoid using other functions inside the brackets, it may lead to incorrect results.

```
abs(a++); // avoid this - yields incorrect results
// use this instead:
abs(a);
a++; // keep other math outside the function
```