I am using RTRT to do unit test of C language.I have some questions about the stub simulation in its script.RTRT use three methods to pass each parameter(input,output or input/output).

In the .ptu file I can define the stub as:
# void f(int_inout p1,int_in p2);
So in the test part I write as:
STUB f ((3,5),9)

But in .c file,What is the prototype of this stub? How can it be called in the .c file?