Modifying constructor for unop-plus structures.
(change-unop-plus x )
This is an often useful alternative to make-unop-plus.
We construct a new unop-plus structure that is a copy of
This is an ordinary
Macro:
(defmacro change-unop-plus (x &rest args) (std::change-aggregate 'unop-plus x args 'nil 'change-unop-plus 'nil))