It can sometimes make a difference, but usually the compiler's optimizer does a good job of deciding whether or not a function should be inlined. If you want y

It can sometimes make a difference, but usually the compiler's optimizer does a good job of deciding whether or not a function should be inlined. If you want you can nudge the compiler in the direction you want via the "inline" keyword, although the compiler won't always take this suggestion to heart. MSVC has "__forceinline" but it too will not always comply. Before the "inline" keyword, macros were the standard way to do this, IIRC