Why do I not get a reusable function for a library subsystem

Under what circumstances, embedded coder shall not generate reusable code for my library blocks. I have made the subsystem with 5 inputs and 1 output as library with the setting " Atomic subsystem-> Reusable Function-> Function Name" as custom function name. The input and output data types of the block is same at all places in my model. Basically I have hardcoded the datatypes at input and output port of the block to ensure no datatype conflict takes place. But stil at some places I see reusable function while in some areas different function getting generated for the same block. I am using Matlab2017a

Answer 1

[Shivangi Gupta]

There are limitations for Reusable Subsystems to be generated uniquely. To determine reusability of the subsystem code, the code generator performs a checksum to determine if subsystems are identical. More information about the limitations can be found in the following documentation page:

https://in.mathworks.com/help/ecoder/ug/library-based-code-generation-for-subsystems-shared-across-models.html?searchHighlight=subsystem-code-reuse-limitations&s_tid=srchtitle#mw_1c9d49f5-ec01-42c8-94ee-3c4737c4a8a6

To determine what cause the code generator the generate multiple functions, please see the following documentation page:

http://www.mathworks.com/help/rtw/ug/determine-why-subsystem-code-is-not-reused.html