Get the value field from a literal-character.
(literal-character->value x) → value
This is an ordinary field accessor created by fty::defprod.
Function:
(defun literal-character->value$inline (x) (declare (xargs :guard (literalp x))) (declare (xargs :guard (equal (literal-kind x) :character))) (let ((__function__ 'literal-character->value)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and (equal (literal-kind x) :character) x))) (char-fix (std::da-nth 0 (cdr x)))) :exec (std::da-nth 0 (cdr x)))))
Theorem:
(defthm characterp-of-literal-character->value (b* ((value (literal-character->value$inline x))) (characterp value)) :rule-classes :rewrite)
Theorem:
(defthm literal-character->value$inline-of-literal-fix-x (equal (literal-character->value$inline (literal-fix x)) (literal-character->value$inline x)))
Theorem:
(defthm literal-character->value$inline-literal-equiv-congruence-on-x (implies (literal-equiv x x-equiv) (equal (literal-character->value$inline x) (literal-character->value$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm literal-character->value-when-wrong-kind (implies (not (equal (literal-kind x) :character)) (equal (literal-character->value x) (char-fix nil))))