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Lhbit-var

Make-lhbit-var

Basic constructor macro for lhbit-var structures.

Syntax

(make-lhbit-var [:name <name>] 
                [:idx <idx>])

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

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

Definition

This is an ordinary make- macro introduced by defprod.

Macro: make-lhbit-var

(defmacro make-lhbit-var (&rest args)
  (std::make-aggregate 'lhbit-var
                       args '((:name) (:idx))
                       'make-lhbit-var
                       nil))

Function: lhbit-var

(defun lhbit-var (name idx)
  (declare (xargs :guard (and (svar-p name) (natp idx))))
  (declare (xargs :guard t))
  (let ((__function__ 'lhbit-var))
    (declare (ignorable __function__))
    (b* ((name (mbe :logic (svar-fix name) :exec name))
         (idx (mbe :logic (nfix idx) :exec idx)))
      (hons :var (std::prod-hons name idx)))))