How much overhead is there in calling a function in C++?

Question

A lot of literature talks about using inline functions to \"avoid the overhead of a function call\". However I haven\'t seen quantifiable data. What is the actual overhead o

Answer 1

The amount of overhead will depend on the compiler, CPU, etc. The percentage overhead will depend on the code you're inlining. The only way to know is to take your code and profile it both ways - that's why there's no definitive answer.