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Vl-constint

Make-vl-constint

Basic constructor macro for vl-constint structures.

Syntax

(make-vl-constint [:origwidth <origwidth>] 
                  [:value <value>] 
                  [:origtype <origtype>] 
                  [:wasunsized <wasunsized>])

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

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

Definition

This is an ordinary make- macro introduced by defprod.

Macro: make-vl-constint

(defmacro make-vl-constint (&rest args)
  (std::make-aggregate 'vl-constint
                       args
                       '((:origwidth)
                         (:value)
                         (:origtype)
                         (:wasunsized))
                       'make-vl-constint
                       nil))

Function: vl-constint

(defun vl-constint (origwidth value origtype wasunsized)
 (declare (xargs :guard (and (posp origwidth)
                             (natp value)
                             (vl-exprtype-p origtype)
                             (booleanp wasunsized))))
 (declare (xargs :guard (< value (expt 2 origwidth))))
 (let ((__function__ 'vl-constint))
  (declare (ignorable __function__))
  (b* ((origwidth (mbe :logic (pos-fix origwidth)
                       :exec origwidth))
       (value (mbe :logic (nfix value) :exec value))
       (origtype (mbe :logic (vl-exprtype-fix origtype)
                      :exec origtype))
       (wasunsized (mbe :logic (acl2::bool-fix wasunsized)
                        :exec wasunsized)))
   (let ((value (mbe :logic (acl2::loghead (pos-fix origwidth)
                                           value)
                     :exec value)))
    (hons :vl-constint
          (std::prod-hons (std::prod-hons origwidth value)
                          (std::prod-hons origtype wasunsized)))))))