Defining Functions › Function Types, Message Types, and Function Fields › EXCUSRSRC User Function

EXCUSRSRC User Function

The Execute User Source (EXCUSRSRC) function specifies either:

• User-written high-level language source code is to be included within the source code generated by a calling function.
• Device language statements, for example, DDS that can be applied to a device function to customize the associated device design.

For more information on device user source, see this module, in the chapter, "Modifying Device Designs," Device User Source topic.

The HLL source code of the EXCUSRSRC function must be the same as that of the calling function; that is, a function implemented in RPG can only call an EXCUSRSRC function that is RPG.

You can attach the EXCUSRSRC function to any access path, or you can specify *NONE for the access path. You should normally attach the EXCUSRSRC function to a file containing some or all of the function parameters. If there are no suitable files, it may be worth considering defining a dummy file using a Defined as relation.

For example:

FIL    User source    REF    Defined as    FIL    User source    REF