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Congruence-rule

Make-congruence-rule

Basic constructor macro for congruence-rule structures.

Syntax

(make-congruence-rule [:equiv-req <equiv-req>] 
                      [:fn <fn>] 
                      [:arg-contexts <arg-contexts>] 
                      [:arity <arity>])

This is the usual way to construct congruence-rule structures. It simply conses together a structure with the specified fields.

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

Definition

This is an ordinary make- macro introduced by defprod.

Macro: make-congruence-rule

(defmacro make-congruence-rule (&rest args)
  (std::make-aggregate 'congruence-rule
                       args
                       '((:equiv-req)
                         (:fn)
                         (:arg-contexts)
                         (:arity))
                       'make-congruence-rule
                       nil))

Function: congruence-rule

(defun congruence-rule (equiv-req fn arg-contexts arity)
 (declare (xargs :guard (and (pseudo-fnsym-p equiv-req)
                             (pseudo-fnsym-p fn)
                             (equiv-contextslist-p arg-contexts)
                             (natp arity))))
 (declare (xargs :guard t))
 (let ((__function__ 'congruence-rule))
   (declare (ignorable __function__))
   (b*
    ((equiv-req (mbe :logic (pseudo-fnsym-fix equiv-req)
                     :exec equiv-req))
     (fn (mbe :logic (pseudo-fnsym-fix fn)
              :exec fn))
     (arg-contexts (mbe :logic (equiv-contextslist-fix arg-contexts)
                        :exec arg-contexts))
     (arity (mbe :logic (nfix arity) :exec arity)))
    (list equiv-req fn arg-contexts arity))))