Function

nan()

Constant number representing Not A Number, generally used for comparison to the result of mathematical operations with invalid inputs. This is equivalent to a decimal (floating point) null, but nan() is provided for more explicit usage in mathematical expressions.

Returns

Decimal

Examples

nan(100) returns null.

Feature compatibility

The table below lists this function's compatibility with various features in Appian.

Feature	Compatibility	Note
Portals	Compatible
Offline Mobile	Compatible
Sync-Time Custom Record Fields	Compatible	Can be used to create a custom record field that only evaluates at sync time.
Real-Time Custom Record Fields	Incompatible	Custom record fields that evaluate in real time must be configured using one or more Custom Field functions.
Process Reports	Compatible
Process Events	Compatible