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• Basic-printing

Vl-printable-p

(vl-printable-p x) recognizes strings, character lists, numbers, and ordinary characters.

Signature

(vl-printable-p x) → *

We use this function as the guard for functions such as vl-print, vl-println, etc. We do not allow x to be a symbol because of the potential confusion between the symbol nil and character lists.

Definitions and Theorems

Function: vl-printable-p

(defun vl-printable-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'vl-printable-p))
    (declare (ignorable __function__))
    (or (stringp x)
        (character-listp x)
        (acl2-numberp x)
        (characterp x))))

Theorem: vl-printable-p-when-stringp

(defthm vl-printable-p-when-stringp
  (implies (stringp x)
           (vl-printable-p x)))

Theorem: vl-printable-p-when-character-listp

(defthm vl-printable-p-when-character-listp
  (implies (character-listp x)
           (vl-printable-p x)))

Theorem: vl-printable-p-when-acl2-numberp

(defthm vl-printable-p-when-acl2-numberp
  (implies (acl2-numberp x)
           (vl-printable-p x)))

Theorem: vl-printable-p-when-characterp

(defthm vl-printable-p-when-characterp
  (implies (characterp x)
           (vl-printable-p x)))

Subtopics

Vl-printable-fix