Unary plus of a value of type
Function:
(defun plus-ullong (x) (declare (xargs :guard (and (ullongp x)))) (ullong-fix x))
Theorem:
(defthm ullongp-of-plus-ullong (ullongp (plus-ullong x)))
Theorem:
(defthm plus-ullong-of-ullong-fix-x (equal (plus-ullong (ullong-fix x)) (plus-ullong x)))
Theorem:
(defthm plus-ullong-ullong-equiv-congruence-on-x (implies (ullong-equiv x x-equiv) (equal (plus-ullong x) (plus-ullong x-equiv))) :rule-classes :congruence)