is_NaN
    The following is a list of properties for the function is_NaN:
| Property | Value | 
|---|---|
brief | Is not a number(NaN) | 
category | double | 
description | Checks if the argument 'number' is not a number(NaN) and returns the boolean result. | 
functionId | is_NaN | 
functionLabel | is_NaN | 
parameters | [ { "dataType": "double", "description": "Number to check", "name": "number" } ] | 
pure | true | 
returns | { "dataType": "boolean", "description": "True if the argument 'number' is not a number." } |