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Vl-make-integer

Safely create a well-typed constant integer atom whose value is n.

Signature

(vl-make-integer n &key (bits '32)) → index

Arguments

n — Guard (integerp n).

bits — Guard (posp bits).

Returns

index — Type (vl-expr-p index).

Definitions and Theorems

Function: vl-make-integer-fn

(defun vl-make-integer-fn (n bits)
 (declare (xargs :guard (and (integerp n) (posp bits))))
 (declare (xargs :guard (unsigned-byte-p bits n)))
 (let ((__function__ 'vl-make-integer))
  (declare (ignorable __function__))
  (let* ((value (lnfix n))
         (bits (lposfix bits)))
   (hons-copy
    (make-vl-literal
      :val (make-vl-constint :origwidth bits
                             :origsign :vl-signed
                             :wasunsized t
                             :value (acl2::loghead bits value)))))))

Theorem: vl-expr-p-of-vl-make-integer

(defthm vl-expr-p-of-vl-make-integer
  (b* ((index (vl-make-integer-fn n bits)))
    (vl-expr-p index))
  :rule-classes :rewrite)

Theorem: vl-expr-kind-of-vl-make-integer

(defthm vl-expr-kind-of-vl-make-integer
  (eq (vl-expr-kind (vl-make-integer n :bits bits))
      :vl-literal))

Theorem: vl-expr-resolved-p-of-vl-make-integer

(defthm vl-expr-resolved-p-of-vl-make-integer
  (vl-expr-resolved-p (vl-make-integer n :bits bits)))

Theorem: vl-resolved->val-of-vl-make-integer

(defthm vl-resolved->val-of-vl-make-integer
  (equal (vl-resolved->val (vl-make-integer n :bits bits))
         (acl2::logext (pos-fix bits) (nfix n))))

Theorem: vl-make-integer-fn-of-ifix-n

(defthm vl-make-integer-fn-of-ifix-n
  (equal (vl-make-integer-fn (ifix n) bits)
         (vl-make-integer-fn n bits)))

Theorem: vl-make-integer-fn-int-equiv-congruence-on-n

(defthm vl-make-integer-fn-int-equiv-congruence-on-n
  (implies (acl2::int-equiv n n-equiv)
           (equal (vl-make-integer-fn n bits)
                  (vl-make-integer-fn n-equiv bits)))
  :rule-classes :congruence)

Theorem: vl-make-integer-fn-of-pos-fix-bits

(defthm vl-make-integer-fn-of-pos-fix-bits
  (equal (vl-make-integer-fn n (pos-fix bits))
         (vl-make-integer-fn n bits)))

Theorem: vl-make-integer-fn-pos-equiv-congruence-on-bits

(defthm vl-make-integer-fn-pos-equiv-congruence-on-bits
  (implies (acl2::pos-equiv bits bits-equiv)
           (equal (vl-make-integer-fn n bits)
                  (vl-make-integer-fn n bits-equiv)))
  :rule-classes :congruence)