# Non-virtual subsystems in PWM

### 1. Code Mapping [hide]

The following table: provides a mapping from the non-virtual subsystems in the model to functions or reusable functions in the generated code and notes exceptions that caused some non-virtual subsystems to not reuse code even though they were assigned a function packaging setting ('Function packaging' entry on the Subsystem Block Dialog) of 'Auto' or 'Reusable function'.
Subsystem | Reuse Setting | Reuse Outcome | Outcome Diagnostic
--- | --- | --- | ---
<S4> | Auto | Inline | normal

### 2. Code Reuse Exceptions [hide]

The following section provides details on each exception that caused a non-virtual subsystem with a function packaging setting of 'Auto' to become an inlined code segment, 'Auto' to become a non-reusable function without arguments, or 'Reusable function' to become a non-reusable function without arguments. Note:This section does not report graphically identical non-virtual subsystems marked as 'Auto' that were not reused due to differences in their functional properties (such as dimensions, datatypes, work vectors, parameters, etc.). You may identify reasons for non-reuse in such cases by inspecting the differences in the functional attributes of the subsystems in the model or in the inlined generated code.
No reuse exception in model