C++ #define variable parameter function

Question

I have a CPU sensitive application and want to minimize function calls. I want to write something like:

#ifdef condition        
#define f(a,b) ff(a,b)   
#define f(a) ff(a)    
#endif    

But the compiler sees f as defined multiple times. I wanted to use __VAR_ARGS__ but in the example above b is of enum type. Is there a proper way to do it or I should just rename f(a,b) to f2(a,b)?

To clarify the defines, if active, add calls to functions that process data for printing to file/stdout, otherwise they are replaced with empty lines, so in my opinion this method would improve code size and since the macro is single line keyword like INFO(object->contents) I think it's more readable. Also it would have been useful if I could have added something like WARN("message") and WARN("value is",obj->printvalue()).

I also think inline would do the trick (from the answer below).

Answer 1

This is a very C-ish way of approaching this. Simply make it an overloaded inline function. Any optimiser worthy of the name will inline the call.