is_nan.json

{
    "id": "is_nan",
    "summary": "Value is not a number",
    "description": "Checks whether the specified value `x` is not a number (often abbreviated as `NaN`). The definition of `NaN` follows the [IEEE Standard 754](https://ieeexplore.ieee.org/document/4610935). All non-numeric data types MUST also return `true`.",
    "categories": [
        "comparison"
    ],
    "parameters": {
        "x": {
            "description": "The data to check.",
            "schema": {
                "description": "Any data type is allowed."
            },
            "required": true
        }
    },
    "returns": {
        "description": "`true` if the data is not a number, otherwise `false`",
        "schema": {
            "type": "boolean"
        }
    },
    "examples": [
        {
            "arguments": {
                "x": 1
            },
            "returns": false
        },
        {
            "arguments": {
                "x": "Test"
            },
            "returns": true
        }
    ],
    "links": [
        {
            "rel": "about",
            "href": "https://ieeexplore.ieee.org/document/4610935",
            "title": "IEEE Standard 754-2008 for Floating-Point Arithmetic"
        }
    ]
}