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• Vl-echar-p

Vl-echar->char

High-level accessor: get the character from an vl-echar-p.

Signature

(vl-echar->char x) → char

Arguments

x — Guard (vl-echar-p x).

Returns

char — Type (characterp char).

Definitions and Theorems

Function: vl-echar->char$inline

(defun vl-echar->char$inline (x)
 (declare (xargs :guard (vl-echar-p x)))
 (let ((__function__ 'vl-echar->char))
  (declare (ignorable __function__))
  (the
    character
    (code-char (the (unsigned-byte 8)
                    (vl-echarpack->code (vl-echar-raw->pack x)))))))

Theorem: characterp-of-vl-echar->char

(defthm characterp-of-vl-echar->char
  (b* ((char (vl-echar->char$inline x)))
    (characterp char))
  :rule-classes :type-prescription)

Theorem: vl-echar->char$inline-of-vl-echar-fix-x

(defthm vl-echar->char$inline-of-vl-echar-fix-x
  (equal (vl-echar->char$inline (vl-echar-fix x))
         (vl-echar->char$inline x)))

Theorem: vl-echar->char$inline-vl-echar-raw-equiv-congruence-on-x

(defthm vl-echar->char$inline-vl-echar-raw-equiv-congruence-on-x
  (implies (vl-echar-raw-equiv x x-equiv)
           (equal (vl-echar->char$inline x)
                  (vl-echar->char$inline x-equiv)))
  :rule-classes :congruence)

Theorem: vl-echar->char-of-vl-echar

(defthm vl-echar->char-of-vl-echar
  (equal (vl-echar->char (vl-echar char loc))
         (char-fix char)))