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