Can generated code step() function returns the derivatives?

Dear support,

I am using:

MATLAB Version: 9.6.0.1072779 (R2019a)

MATLAB License Number: 1XXXXXX

Operating System: Linux 4.18.0-25-generic #26-Ubuntu SMP Mon Jun 24 09:32:08 UTC 2019 x86_64

Java Version: Java 1.8.0_181-b13 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode

I was wondering when generating C code from a Simulink subsystem, is there a way to get the "void Subsystem_step(void)" to just return the xdot (derivatives) given the x (states). Since I will be incorporating the Simulink "Subsystem_step()" function into my bigger external simulation which also have continuous states, I need to do the integration of the Simulink generated code continuous states externally from the Simulink's "Subsystem_step()" ("Subsystem_step()" by default will internally integrate its states). Is this possible?

Thanks,

Linh