## Syntax
```mermaid
%%{init: {
'theme': 'base',
'themeVariables': {
'fontSize': '11px',
'fontFamily': 'Arial'
}
}}%%
flowchart LR
Start((START)) --> | | ABS[ABS]:::quoted
ABS --> End((END))
```
Returns the absolute value of a number as decimal.
Parameters:
- Input: A number that is greater than or equal to System.Double.MinValue, but less than or equal to System.Double.MaxValue.