Can I know how much arguments my function gets?

given function in c++ , exists way to get what is the number of the arguments that my function gets ? (like argc in main in c language).

for example:

double MyFunction(int x , int y) {   
int NumOfParam= //.... =2;  
}   

Note: I asking for a way (if I can at all) to do it without send the number of the arguments as parameter itself.. (like argc).