Function: subr-primitive-p
subr-primitive-p is a byte-compiled function defined in subr.el.gz.
Signature
(subr-primitive-p OBJECT)
Documentation
Return t if OBJECT is a built-in primitive function.
Source Code
;; Defined in /usr/src/emacs/lisp/subr.el.gz
(defsubst subr-primitive-p (object)
"Return t if OBJECT is a built-in primitive function."
(and (subrp object)
(not (subr-native-elisp-p object))))