Calling a User-Defined Built-In Function

Purpose

This is the generalized syntax for calling a user-defined built-in function.

Syntax

                                ┌───── , ─────┐
►►─── invocation-name ────── ( ─▼─ parameter ─┴─ ) ───────────────────────────►◄

Parameters

invocation-name

Specifies the invocation name for the user-defined function.

parameter

Specifies the parameters for the user-defined function.

Optional parameters that are not included must be replaced by the character @, unless no included parameters follow the omitted parameter.