		Search-engine friendly clone of the ACL2 documentation.

Group-literal-affine

Make-group-literal-affine

Basic constructor macro for group-literal-affine structures.

Syntax

(make-group-literal-affine [:x <x>] 
                           [:y <y>])

This is the usual way to construct group-literal-affine structures. It simply conses together a structure with the specified fields.

This macro generates a new group-literal-affine structure from scratch. See also change-group-literal-affine, which can "change" an existing structure, instead.

Definition

This is an ordinary make- macro introduced by fty::defprod.

Macro: make-group-literal-affine

(defmacro make-group-literal-affine (&rest args)
  (std::make-aggregate 'group-literal-affine
                       args '((:x) (:y))
                       'make-group-literal-affine
                       nil))

Function: group-literal-affine

(defun group-literal-affine (x y)
  (declare (xargs :guard (and (coordinatep x) (coordinatep y))))
  (declare (xargs :guard t))
  (let ((__function__ 'group-literal-affine))
    (declare (ignorable __function__))
    (b* ((x (mbe :logic (coordinate-fix x) :exec x))
         (y (mbe :logic (coordinate-fix y)
                 :exec y)))
      (cons :affine (list x y)))))