C Macro deeper meaning?

[Adam D. Ruppe via Digitalmars-d-learn]

On Sunday, 31 January 2016 at 02:58:28 UTC, Andrew Edwards wrote:
> But it cannot be that simple, so what am I missing?

I'm guessing the macro was there in C to silence compiler 
warnings about not using a return value. So I think your 
translation is ok:

NOTUSED(somefunction(....));

still calls the function, so the behavior is the same. If I'm 
right, the macro was just about discarding the return value in 
such a way as to tell the compiler warning / lint program that 
you intentionally wanted to ignore it.