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