symbol-function

(symbol-function symbol)

Returns the function value bound to symbol in the function namespace -- the same value #'name denotes. The result can be passed to funcall/apply or stored. Because rontolisp is a Lisp-2, this looks only in the function namespace, never at a variable of the same name. A quoted symbol literal ((symbol-function 'car)) resolves at compile time in the compilers; a runtime-computed symbol resolves late through the compiled name registry when the result is called -- with two deviations there: functionp of the result answers nil, and an undefined name signals at the call rather than at symbol-function itself.

symbol-function is also a setf place: (setf (symbol-function 'name) fn) installs fn as the symbol's global function definition -- defining an alias for an existing function, or replacing one. In the compilers a call site the compiler already bound directly keeps the original function (fmakunbound's divergence); a name bound ONLY this way is fully late-bound, and calling it before the assignment signals The function NAME is undefined.