Cost of a Function Call in EL?

[Alan Mi <ami@xxxxxxxxxxxxxx>]

In C language (C++ alike), the cost of calling a function is
equivalent to executiing 20~40 lines of plain code (no loop,
branch,
calling) under typical compiler implementations, because it
involves context switching. Is the cost of a function call
in EL similarly high? Guess so but would like to see a sure
answer.

Alan Mi