Get the suffix field from a fconst-dec.
(fconst-dec->suffix x) → suffix
This is an ordinary field accessor created by fty::defprod.
Function:
(defun fconst-dec->suffix$inline (x) (declare (xargs :guard (fconstp x))) (declare (xargs :guard (equal (fconst-kind x) :dec))) (let ((__function__ 'fconst-dec->suffix)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and (equal (fconst-kind x) :dec) x))) (fsuffix-option-fix (std::da-nth 1 (cdr x)))) :exec (std::da-nth 1 (cdr x)))))
Theorem:
(defthm fsuffix-optionp-of-fconst-dec->suffix (b* ((suffix (fconst-dec->suffix$inline x))) (fsuffix-optionp suffix)) :rule-classes :rewrite)
Theorem:
(defthm fconst-dec->suffix$inline-of-fconst-fix-x (equal (fconst-dec->suffix$inline (fconst-fix x)) (fconst-dec->suffix$inline x)))
Theorem:
(defthm fconst-dec->suffix$inline-fconst-equiv-congruence-on-x (implies (fconst-equiv x x-equiv) (equal (fconst-dec->suffix$inline x) (fconst-dec->suffix$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm fconst-dec->suffix-when-wrong-kind (implies (not (equal (fconst-kind x) :dec)) (equal (fconst-dec->suffix x) (fsuffix-option-fix nil))))