not-equal
Returns Boolean true if a is not equal to b; false otherwise.

Languages
Built-in, C++, C#, Java, XQuery, XSLT 1.0, XSLT 2.0, XSLT 3.0.
Parameters
| Argument | Description | 
|---|---|
| a | Mandatory parameter. Provides the first value to compare. | 
| b | Mandatory parameter. Provides the second value to compare. |