Basic constructor macro for sign-plus structures.
(make-sign-plus )
This is the usual way to construct sign-plus structures. It simply conses together a structure with the specified fields.
This macro generates a new sign-plus structure from scratch. See also change-sign-plus, which can "change" an existing structure, instead.
This is an ordinary
Macro:
(defmacro make-sign-plus (&rest args) (std::make-aggregate 'sign-plus args 'nil 'make-sign-plus nil))
Function:
(defun sign-plus nil (declare (xargs :guard t)) (let ((__function__ 'sign-plus)) (declare (ignorable __function__)) (cons :plus (list))))