---
title: "NSDecimalIsNotANumber(_:)"
framework: foundation
role: symbol
role_heading: Function
path: "foundation/nsdecimalisnotanumber(_:)"
---

# NSDecimalIsNotANumber(_:)

Returns a Boolean that indicates whether a given decimal contains a valid number.

## Declaration

```swift
func NSDecimalIsNotANumber(_ dcm: UnsafePointer<Decimal>) -> Bool
```

## Return Value

Return Value false if the value in dcm represents a valid number, otherwise true.

## Discussion

Discussion For more information, see Number and Value Programming Topics.